Since the end of the season the following transfers have been made by Premiership teams:
Aston Villa 5
Fulham 4
West Ham 4 (includes Andy Carroll being made permanent)
Sunderland 2
Man City 2
Hull 2 (includes George Boyd being made permanent)
Man Utd 1
Southampton 1
Norwich 1
Swansea 1
Liverpool 1
Although MM says its difficult to attract quality players which undoubtedly it is, I would be surprised if a few deals have not been struck already.