For me it has to be Bonucci as we need another great defender. Although Cahill, Azpiliceuta and Luiz are doing amazingly well (the most clean sheets in the league is no accident), i think we badly need another world-class defender. On the bench we only have Terry and Ivanovic, both of who are past their best. Yes, Terry still has great talent but he is not used to the back 3 system.
Bonucci will give us more options at the back and mean we can rest our defenders some matches, which will be especially crucial next season when we have European, probably Champions League football, to contend with.

mascherano for juve - to play in mid, he's wasted as a cb

Gaya from Valencia. Don't watch him often, but seems to do alright when he does play. However, he has to adapt to EPL before he does come. If we can't get him then I'd like Alex Sandro. He performs consistenly, and he is quite young, so it's a win situation for us.

I also still want Mahrez. He's gifted. It's a HUGE surprise after we didn't get Miki or Mahrez. With Miki gone, I'd like Mahrez to come in. If not then Mohamed Salah would be a nice pickup

If we can get Rakitic, I'd also like us to steal him. Santi gets injured WAY too much, and Idk about Wilshere.

@Amir Salah! He would be great at Arsenal but wouldn't it mean trouble with Chelsea fan for him? :S

i've wanted another right back for ages would be nice to get bellerin but cancelo would do.

Alexis Sanchez