What are West Ham United thinking as they just sit and let a staggering Man United deal happen as the transfer window kicks into gear. Next Monday July 1 will mark the official opening of the summer transfer window for international deals. But Premier League clubs like West Ham and Manchester United have been able to trade with one another for nearly two weeks now. And there’s more than one deal that’s been mooted between the Hammers and Man United in recent windows. West Ham came very close to signing Man United defender Harry Maguire last summer only for the move to collapse over severance p…