Villa is the definitely the best top-tier striker for the money. Scores them in for fun and still plays regularly for Spain. We need an experienced goalscorer and the facts that he can play on the left side of attack and is available for around 10m because he's in the last year of his contract is only more evidence that he'd be a much wiser signing than Lewandowski for 25m, Suarez for 40m or Cavani for 53m.
Squad I want to see:
GK: Hart, Pantilimon, Wright
RB: Zabaleta, Richards, Maicon
CB: Kompany, Nastasic, Sakho, (Richards), Boyata
LB: Clichy, (Sakho), Rekik
CM: Yaya, Fernandinho, Barry, Milner, Rodwell, Razak
Attacking Mid/Wings: Silva, Di Maria, Navas, Nasri, (Milner)
ST: Aguero, Dzeko, Villa, Guidetti
INs: Navas, Fernandinho, Villa Di Maria and Sakho
OUTs: Tevez, Kolo, Kolarov, Sinclair, Lescott and Garcia
Quality and depth in every position. With that squad you could play in any formation effectively 4-3-3, 4-4-2, 4-2-3-1, 4-2-2-2....with Pellegrini I can see us rotating a lot and switching systems regularly unlike under Mancini.