All athletes are competitive by nature. You train hard to compete to win.
Lazio isn’t in the business of winning anything. A super coppa here or there doesn’t cut it. All athletes want to compete for the big trophies. By staying at Lazio he’s indicating that he doesn’t have the ambition to compete for all the glory despite having the abilities and work ethic , etc.
We all know he can but he doesn’t. Then it’s simply a waste of talent.