Would you keep or sell these "Scout" players

[The_Mariner]

Yes if you get the fast trainers, nordgens or hot prospects are almost guarrantees, 5* are what most people go for if they can not afford scouts, but you can get 3/4 * hot prospects that will do a good job.
You don't have to break the bank getting Q4 or Q9 when Q3 or Q8 hot prospect fast trainers will do just aswell!, the main thing is getting young players.

Thanks for the advice just got a new CM so I am done with transfers for the season! he is 23 quality 29 do not know if he is a fast trainer though! hopefully I can finish my first season with the league title and a cup!

EDIT: What would be considered a fast trainer? 1 cone per training session for example?