We won't finish 3rd and it'd make little difference if we did, we'd still have to qualify. Once our season's over and there's nothing left to play for I'd rather see the youngsters get given a chance, the games would be of far more benefit to them than the first team who pretty much just wanted the season to be over since they went out of the cups.
Besides, it was them who lost to Chelsea, so if anyone wanted revenge it'd be them and they've shown they can give most Premiership teams a run for their money.
And in case you haven't noticed, we won't win anything this season anyway and a CL place is all we have left to play for, though our goal difference over Everton is already more of a point than yours over Chelsea, so we could probably afford to start picking our youngsters now.