Vincenzo Montella acknowledged Manchester United have the players to worry him and he expects his Sevilla side to face a "very offensive" opponent at Old Trafford on Tuesday.
Sevilla travel to Manchester having drawn 0-0 with Jose Mourinho's men at the Ramon Sanchez Pizjuan on February 21 in the first leg of their Champions League round of 16 tie.
It was seen as a missed opportunity for Sevilla, given they controlled much of the game and saw Luis Muriel denied a goal by a remarkable David de Gea save just before half-time.
United have won all three of their matches since drawing in Seville, including coming from 2-0 down to beat Crystal Palace 3-2 and Saturday's 2-1 triumph over in-form Liverpool.
While Sevilla have lost two of their four league games since, with Valencia leaving Andalusia with a 2-0 victory on Saturday.
And Montella is well aware of the task facing his side as they look to reach the Champions League quarter-finals for the first time.
"I am as worried as I was in the first leg, because United have a strong physical and technical level," Montella told reporters on Monday.
"It is normal [to be worried] – they are top-level players and they have technique, physical prowess and strength.
"Looking at the first-leg team, his [Mourinho's] side had very offensive players like [Alexis] Sanchez, [Romelu] Lukaku, et cetera. Tomorrow, it will be the same, a Manchester United with very offensive players.
"We played an excellent match in the first leg, we have to play that to 180 minutes now.
"We have another chance tomorrow [Tuesday], we know that United have beaten Chelsea and Liverpool and have come back against Crystal Palace.
"They're on a roll, but we hope to interrupt United's good run. Mourinho is not used to losing at home, so maybe it'll be good to just draw 1-1."
Montella's side head to Manchester with some injury problems, particularly in defence.
Sebastian Corchia and his right-back deputy Jesus Navas are both out injured, meaning Montella is going to have to shuffle his back, though he is adamant he will not be switching to a back three as a result.
"In a game like this, at the highest level, it is important to keep the same principles of your game," Montella said.
"You cannot play differently. We will have four defenders and I have to decide which players.
"I do not have many options for right-back. One can be [left-back, Sergio] Escudero and the others can be [Gabriel] Mercado and [Simon] Kjaer. That will be the choice."
|Unhappy Renard continues ref rant|
|Wallace takes BMW International title despite Olesen 61|
|Hamilton cruises back to standings summit with France win|
|In-form Kvitova defends Birmingham title|
|Southgate responds to toughest England week in record-breaking style|
|Uruguay not thinking about Portugal or Spain, insists Cavani|
|Coric stuns Federer to claim title in Halle|
|England 6 Panama 1: Kane hat-trick sees Southgate´s side sail through|
|Australia v Peru: Juric keeping the faith as Socceroos chase unlikely last-16 spot|
|England surpass class of 1966 in Panama rout|
|Nigeria v Argentina: All eyes on Messi to rescue final World Cup chance|
|NSW seal Origin series with comeback win|
|World Cup 2018: Stalin´s bunker, a space museum and Serbian specials in Samara|
|Croatia looking out for number one - Lovren|
|Heritage at back of Australian minds ahead of potential Croatia encounter|
|It may be my last World Cup - ´Realistic´ Pogba determined to reign in Russia|
|Lionel Messi´s birthday: What might the Barcelona star wish for?|
|Russia readying Dzagoev for last-16 clash|
|Germany apologised for reaction aimed at Sweden bench|
|Picture this! Sterling starts for England against Panama|
|World Cup 2018: A Russian romp, Maradona and the party in Moscow|
|Happy birthday, Lionel Messi! 10 of the Argentina star´s best goals|
|Modric worthy of Ballon d´Or, says Lovren|
|Sigurdsson ready for Croatia reunion as Iceland go for broke|
|Iceland v Croatia: Dalic to rest stars for Hallgrimsson divorce hearing|
|Men´s tennis will have to ´wake up´ after Federer and Nadal, says King|
|Tennis star Djokovic backs VAR despite Serbia controversy|
|Socceroos have deserved more at World Cup – Skoko|
|Dodgers top Mets in Kershaw´s return from DL|
|MLS Review: Red Bulls end Dallas´ unbeaten run, Sporting stage comeback|
|Hierro: This Spain team similar to 2010 World Cup champions|
|Dowrich, Holder lead Windies fightback after poor start|
|With Neymar back, Brazil are World Cup favourites – Lugano|
|Alba: I don´t understand the criticism of Messi|
|He has sacrificed a lot – Stuani praises Suarez|
|Manning says Brees deserves to break his record for career passing yards|
|Hornets want Walker to play entire career with Charlotte|
|Avalanche sign Grubauer to three-year extension|
|Argentina struggles down to team, not just Messi – Hierro|
|Casey leads Travelers by four after firing 62|
|Scotland run riot in Argentina as Hourcade tenure ends in defeat|
|Germany´s Rudy in doubt for South Korea clash|
|England produce storming fightback to beat New Zealand|
|Shaqiri, Xhaka facing disciplinary action over goal celebration|
|Kvitova takes WTA lead for wins by easing into Birmingham final|
|Jones: England back on road to being world´s best|
|Germany survive in Sochi but questions remain|
|Germany 2 Sweden 1: Late Kroos winner brings Low´s men back from the brink|
|Perisic dreaming of matching Croatia´s France 98 heroes|
|Veron questions Sampaoli for leaving Icardi out|
|Southgate won´t blame injured Alli for playing through pain barrier|
|Travelers Championship: Course invader drives Rory McIlroy and crowd nuts|
|Saul tells Atletico to renew Oblak deal after Griezmann´s new contract|
|Course invader sends McIlroy & crowd nuts at Travelers Championship|
|Saudi Arabia v Egypt: El Hadary eyes history in dead rubber|
|Referee declines Cheika invite after Australia´s series loss to Ireland|
|Griezmann, Mbappe can eclipse Henry, claims Trezeguet|
|Nawalka hopeful of Glik return against Colombia|
|Mexico outsmart South Korea to join Croatia as unheralded World Cup threats|
|´No drama´ for Southgate after England team sheet leak|
|Hend caught by five in Pulheim as Bjerregaard goes low|
|´Little Pea´ Hernandez hits big Mexico milestone in World Cup win|
|Modric and Rakitic the best midfield in Russia - Corluka|
|Cipriani and Farrell ease pressure on Jones as England avoid SA whitewash|
|South Korea 1 Mexico 2: Hernandez nets landmark goal as last 16 beckons|
|Ozil and Khedira axed by Germany|
|Djokovic plans to use two rackets against Cilic after reaching Queen´s final|
|World Cup of penalties? Russia surpasses Brazil after VAR introduction|
|Neymar ´fully recovered´ but Brazil coach Tite has thigh injury|
|Hansen claims France ´clutching at straws´ after another referee controversy|