Gameiro - striker
Keep Sol Campbell, he's great in my save.
Also, try to snap up Sidney Govou (yeah he's old, but he's pretty awesome)..
Try to snap up Enyeama since the gk's aren't the best in the world...
If you need a great defender for 3-4 seasons (max), go for Rafael Marquez. Yes, believe it or not, he's actually worth the probably 1-2 mil you'll pay for him..
You're probably wondering at this point, why buy such old guys (apart from Enyeama & Gameiro)
Hey, it's just a suggestion...