First-line center Nick Bonino will be out three-to-four weeks after dislocating his right shoulder in the first period of Saturday night’s 3-2 win over Michigan, according to BU coach Jack Parker. Near the end of the period, Bonino fell over a Michigan player in the offensive zone and landed hard on the shoulder.Parker said that the training staff had already popped the shoulder back into place by the time Bonino got to the trainer’s room, but that it would take him a while to recover since it’s the first time he dislocated the shoulder. On the other hand, the fact that’s it the first time means Bonino will be less likely to have it pop out again once he’s recovered.Someone like sophomore forward Ross Gaudet, who dislocated his shoulder for the eighth time in the last three years two weeks ago, takes a shorter time to recover, but is more likely to have it come out again.