If Jake were really going to join the NBA he would have to talk well with his mother too, Jake would have to move to the city where his team would play and would have to travel all year round in several different cities to play in the season.
So Jake figured Eva wouldn't live in the city where he would live and would continue to take care of the restaurant that was what she always wanted, Jake wanted to see his mother happy and after that first year at university Jake was no longer worried about Eva getting depressed without him around and he also thought his mother was living well without him around.
But there was a possibility that Eva might want to move to live in the same city where Jake lived, Jake could imagine that happening and so he knew he would have to talk to her about it before deciding.