Staff decide what you can train
If a trait will not train, the published reason is coaching staff and structure.
The trait button is not free. SEGA and Sports Interactive both tie it to staff. The FAQ says your club's coaching staff and structure influence what training you can action, and that you should recruit for the specialisms you need. The feature blog says the coaching structure determines which traits you can train, and that this links development to staff quality and coaching specialisms. That is the whole mechanism they published. No wage for a coach. No star rating that unlocks a trait. No list of specialism names. The rule you can use is the one they wrote: if you cannot train the trait, look at whether the staff cover that job.

A training report. Official screenshot, SEGA feature blog, 5 November 2026.
What you do
Open the trait training on a player you care about. If the action is there, the staff you have are enough for that trait, on the evidence of the button existing. If it is not there, the published next step is staff recruitment for the missing specialism, not a forum workaround. No official post names a coach to buy. The search filters are how you add the personality or the trait by signing someone who already has it. That does not remove the staff gate on training. A new signing with the trait still sits inside whatever your coaches can develop. Both tools are in the same FAQ answer on purpose.
What carries
Training setups from the previous mobile save carry across, per the tech FAQ. The staff gate is about what you can action now, in this season's training. A setup that carried does not prove every new trait is trainable. New roles in tactics also need to be set up after the update. Staff and roles are different jobs. Do not skip the role setup because the coaches look fine.
| If this is true | The posts point you at |
|---|---|
| Trait will not train | coaching staff and structure |
| You want a trait the squad lacks | search filters, then staff for development |
| Old training setup | it carries; new roles still need setup |
| A specialism name you hoped to read here | not published, so not listed |
Tied to staff
Your club's coaching staff and structure influence what training you can action. You should recruit for the specialisms you need. That links development to staff quality and coaching specialisms. Staff quality is the link they wrote. A pretty squad does not replace it. The rule you can use is the rule they wrote. Cover is the test. A guessed job title is not.
Button there, or not
A forum name is not a SEGA line. Filters find. Staff develop. Read them as tools in that same answer, not as a bypass. Filters are on search by personality. The train-or-remove action is on train traits.
Carry is not a free pass
Do not skip the role setup because the coaches look fine. Role setup is tactics that carry. Coaches looking fine is not that setup.
What the posts never print
The list nobody published is the specialisms themselves. It does not name one. The blog says the coaching structure determines which traits you can train. It does not name a structure either. So the working method is trial and error with a free first test. Open a player, look for the trait action, and read the result. A missing action is the only signal the game gives you that the staff are not covering that job, and it is a good one, because it is the game answering the question directly instead of you guessing at a staff attribute. What that rules out is the shopping list. There is no published ranking of coaches by trait coverage, no wage that guarantees a trait, and no star rating that unlocks one. A guide that hands you a name has either read it from a save it did not describe or made it up. Either way it is not a SEGA line. The other thing the posts never print is a trait's numeric effect. The FAQ says traits now carry more description so you can judge whether one is worth improving or erasing. Description is not a number. Gets forward is not a published distance, and a training-report screenshot with a trait name in it is a frame from a development build, not a definition. Read the description, make the call, and accept that the posts designed this to be a judgment rather than a lookup. That is the whole published mechanism, and it is short on purpose.
Where this sits in a season
Trait work is a mid-season job, not a launch one. In the first week you are picking a club and reading the tactics menu. Once the squad is yours and the season is running, the trait action starts to matter, because that is when a preferred move changes what a player does with the minutes he gets. The staff gate means the job scales with your club. A side with a thin coaching setup will find the action missing on more players. A side with a deeper setup will find it available. That is the mechanism working as described, not a bug on the small club. So the order in a save is: get the structure right, then look at the traits. Doing it the other way round leaves you with a list of moves you cannot train, which is the same as no list at all.