Lisandro Lopez,u can get him for free...hes a great and experienced striker...
Also,take a look at Carlos Fierro
Highly recommended:Jonathan Callerri from Boca...
If you could pull another 5mil out of your *** I'd suggest Munir from Barca. Federico Bonazzoli from Inter, 1.1mil (must buy him day 1 otherwise he'll re-sign), Wilson from Man Utd, Vincent Aboubakar (can't sign till season 2) he has the right stats in the right area and will bag 30 or so goals a season with little issues. J.Hernandez from Man Utd when he comes back from loan a.v.e 50 goals a year for me.