Personally, I wouldn't focus on a striker unless you go for a cheaper, talented young forward like Sanogo, Lukaku, Belfodil, etc, as Pavlyuchenko is amazing on the game and you can always use Keane and Defoe as a different lone man option. Honestly if I was you, I'd look to improve the RB and LB position and a AML and AMR. The team is very, very good!