Judgement call I guess for each individual player.
If come June 2021, or even end of this year Musa is a MLS regular would be hard for Hay to ignore him.
He would probably only be an AWs squad member though. Neither starting CB or DM.
Now going into an important pre season at Minnesota, at age 27 he may have his sole career opportunity remaining to play at a higher level than say USL.
Tough call to make, but Minnesota pay his wages not NZF.