don't panic. training is not an automatic occurrence each week. be aware, no training is wasted, even if does not show up each week with a green arrow. judging from you boy's stats, he is coming along with his defense and scoring ability. remember he is 20; it is my understanding the rate of improvement has already slowed from when he was a teenager (although i understand the real drop occurs after 22 or so). be patient.
i would work on improving revenue -- you did not sell out recently despite a decent record. in a bot league, you should win most of your games. i would not rush out to buy players just yet. work on training, learn the game, decide what sort of team and player you want, and when you finally do hit the transfer list, your dollar will go a lot further.