AC Milan completed their task in Serie A as they already got a ticket in top four to Champions League. Win or lose at the match with Verona is not important with AC Milan. However, it is different with AS Roma, they will have to win against Spezia if they won't win against Sevilla in Europa League final match. Because if they lose in the final match, they must beat Spezia to protect their six position that is enough for them to join Europa League next year.
If the second scenario comes, Spezia will have big problem in their match with Roma. Chances to see both clubs lose in a last match are existing and no change in positions between them.
Stefano Pioli's men only need one point to secure a ticket to the Champions League ahead of the match against Juventus, but because in that match they won automatically they are very safe and no one can chase their points in the top four of the standings. The match against Verona will not affect any results for AC Milan, so Pioli can relax a bit and doesn't need to field the main squad and can instead try to play his youth squad.
AS Roma must win in the last match against Spezia to maintain the chance of qualifying for the Europa league via the Serie-A route. If not, Juventus will take their place in the standings and AS Roma also still have a chance of qualifying for the Champions League if they manage to come out as champions in the Europa League. So Rome's potential is still big enough to get a chance to qualify anywhere, as long as they can play consistently in the remaining two matches.