"college" experience, and they're not ready for that to end - "adulting, and making the "millions" can and will come, but can come later. And since the GF is just a freshman, and a phenom at that, I don't think she's ready to just be the GF / ?other and just follow Egor around. She may have aspirations of playing pro herself, and that would be legit - she really good.
So, even though some would definitely move on and take the contract that's just waiting there for the taking, I personally think the two of them (if they're now at the "group think" level), may just want to ride this experience out a little longer. Could be wrong, we'll see.