It turned out that the situation as the host in the second leg did not make the bookmakers favor Sevilla to win in the match later, indeed Sevilla managed to get a draw in the first leg but all because of Man United's poor defense in the final minutes of the match, so that Man United became the only team to score goals, for them and for their opponents, thus proving Sevilla has difficulty facing Man United and this time Man United will still have the chance to win, even though several key players will be absent in this match and also likely to play Harry Maguire which he was one of the causes of the draw in the previous match.
The reason for the odd given to them by bookmarkers is because sevilla have not been really good this season domestically and if not for the tactical blunder made by ETH during the first leg, United would have been playing today's game with a commanding lead. My only worry is the Manchester united backline. I don't know if Varane is fit to play and I would have prefer his partnership with Linderoff to Maguire. Also, I'm sure ETH would be playing the same sidebacks (AVB and Dalot) tonight just has he did during the weekend.