I think it's worth bringing up since Richard is one of the better on-paper recruits that we've had in awhile, but I have a counterpoint to your concern. Any incoming player, or current player, can clearly see his track record at WMU, Union, Providence, and UMass. What exactly about Coach Barr would make you want to leave? I mean he had a hand in developing Cale Makar just two seasons ago, so I don't see how young Mr Richard could look at that and not see an opportunity to get better.
Possibly it's my glass half-full optimism, but I don't foresee any of those issues and quite frankly if any existing players leave, it allows Barr to put his blueprint on the club earlier than anticipated.