This is what i did when i managed Malaga- bought Kameni ( yeah, you need a good gk as ***** caballero isn't that great and Kameni has got a pretty cheap relase clause of about 5- 6 million pounds). I got myself a decent cb in the form of Jan vertonghen who was really solid for me throughout the season for about 8-9 million pounds. You can sell Jesus Gamez ( he is actually pretty decent) to get yourself the funds to sign a rb. I am afraid i dont remember the rb i signed (the likes of van der wiel weren't really interested in joining my team) If i recall correctly there's a decent rb playing for Zurich though i dont remeber his name. Maybe some Rodriguez, i am not sure though. If any money remains, get yourself some good young prospects. You can sell qute a few with malaga as well. For instance, Duda, eliseu ec..
That's all for now, pm me if you want to ask something more about malaga.
Cheers.