Cannot train player trait (coaches are "greyed" out) for only certain players

[Four3Three]

Lately, I've been having some success developing new traits in some of my players, however there are certain players that I don't have the option for. 

I will click development, training, etc. and then click the "discuss new trait" box and there the coaches are greyed out and I am brought to a hault.

- The players are not injured

- The players are not being rested/ on vacation

- The players don't have some crazy high workload

- There are other players who I do have this option for

 

Any ideas?

Thanks.

[sdx15]

Are those players on a coaching course maybe? I know you can't set up additional training for players on coaching courses so I'm guessing the same would apply to traits training?

[Four3Three]

I think I may have figured it out.. maybe.  (BTW, no there not on coaching courses).

I noticed that when you go to the "coaches summary" of various players some of them have a hidden attribute that says "unlikely to improve in the future" or "must improve work ethic to improve."  

2 of the 3 players I have on my squad who cannot learn traits have those negative hidden attributes.  The last remaining one has no negative hidden attributes... less sure about him.  I went through all of my players and it's only 3 of my whole squad who have the problem so it's no biggie.