So far in training camp we know that Andrew MacDonald, defenceman for the Islanders, has not started to skate yet and that the Islanders are taking "precautionary measures." To me this is a good idea. The reason: look at the Islanders schedule. The first four games are at home. The Islanders first away game is not until October 20th. So with the first four games at home, the Islanders should be able to go 3-1 without him and furthermore, give him the added time to rehab his injury.
Another reason: (I'll give you two) Calvin De Haan & Ty Wishart. Both players would be able to handle a few games (possibly more) while MacDonald rests. With Wishart, who already has NHL experience, should be able to prove to management once and for all that he belongs with the big club, while De Haan, who really should get some seasoning in the minors first, would be tested to see how much AHL time he really needs. My guess would be that he won't need much, just ask Travis Hamonic.
For now there a few reasons to let MacDonald heal and the Islanders, for the long haul of the season, know that when he does return, everyone will benefit from it.