Transfer Rumors (31 May 09): Chelsea to go after Atletico Madrid star Aguero, Arsenal in £12m bid for Everton’s Lescott, Tottenham after Sunderland’s Richa

Tomorrow, all hell breaks loose. Well, not quite, but it's pretty close. The summer transfer window kicks off tomorrow, and though there's already been a little activity, the start of the window means that a number of signings will become official, and many more will get on their way to being so in short order.