For me personally you need 4 first team proven strikers. Last season these teams had.
City: Tevez, Aguero, Dzecko, Balotelli.
United: Rooney, Wellbeck, Berbatov, Hernadez.
Arsenal: RVP, Henry, Gervinho, Chamakh,
Spurs: Defoe, Pav, Adebayor, Saha
Chelsea: Drogba, Torres, Sturridge, Anelka/Lukaku
Villa: Bent, Gabby, Weimann, Heskey.
Heskey has left & if Weimann was at a club higher up the league he'd be on loan to a Wigan type. For me we need at least one striker, unless the Fonz has finally seen the light and is in fact the second coming, for me if we could get in an experienced goal scorer on a short term deal, it would be a very good stop gap signing. Someone in the mould of Keane but wages would be an issue.