@Ahlony Wong
the easiest way.... go train the players.... and let them gown one more star..
The problem is that my players are already 6*.
I was tanking last season but a guy (not a friend) we were together in the league, now is in my Cup and he is one level above, so for him they 're 5* players - lol

@dave1311
Just ignore it and let them wait out 24hrs.
I can't because I want to train them or get some gaining from match participating.

@cookizzz
In new version, after playing in a match, does a player still gain training progress or even gain a star if there is a negotiation offer on him?
Didn't try that, I always reject the offer. As we can't use him in training, I suppose he won't earn anything - but not sure.

Click image for larger version.  Name: 2 players 6 stars.jpg  Views: 24  Size: 68.0 KB  ID: 69145
* they 're not in nego list