Agree with most of these here apart from three.
The first being Howard, and this one is easily debatable. We need a new keeper, I'm not disputing that one bit. I'd like to see Howard stay as a back up keeper, however unlikely that is!
Oviedo, despite injury issues, is a good back up player and I think it would be foolish to try to replace him. He has really good spells and if he could get himself fit consistently then he could be a great rotation player for us.
Finally, Baines. Leighton is still one of the best left backs in the league, he has been injured for a fraction of a season. Lets not get over our heads and say we could possibly sell him because of a dip in form due to injury. The creativity and leadership and he has to offer is massive for Everton. I remember earlier on in the season when he came back from injury and he played his socks off and showed us exactly what he's about. I'd hate to see him go.
As for Garbutt, he looks to me as if he could possibly end up in a central role in that defence position. Looks very very promising though.