Look, it's a well known stat that teams involved in that competition struggle badly in the PL. Is that what you want next season?
2007 6th No Euro
2008 5th Euro
2009 5th Euro
2010 8th Euro
So under Moyes we qualified for Europe 4 times and only once did it result in a drop of league placing, infact twice, we improved our league position in seasons in which we played European football.
I wont include 2006 cos I dont consider losing in a play off round European football.