Ok, thanks for your reply, AA

I already knew your team because I was NT manager in previous season, but just looked and good to see that they trained very well this season.

It could be the starting manager was not looking good on the mentor list, or he has a bug in his CFF pages.
He has no mentor yet, I checked that.
And of course, you are right about that I cannot see that list as 1A manager because once in 1A you cannot have a mentor.
That was in CFF2 also the case, I forgot about that.