Seems like Iggy will be wearing #32 for Rochester (#18 was taken). However, interesting that Cook will be wearing #5 for Philadelphia even though #7 was taken. Not sure, if #7 is retired though.
Interesting little fact.
I don't know the players well enough personally to know what numbers they would like if they could have any number no matter what. It's possible Iggy wanted #32 when he got to Cornell, but conformed to Schafer's 1-31 system and Cook wanted #5 but Brian McMeekin already had #5 in 2001. Just a guess, of course.
Or it could be players are just given numbers and you take what you get.