It is already very close to the playoffs. My suggestion is to trim down on your expenses by firing your scrubs. You need only 12 players, so you can fire off 6 at least. Save as much money as you can for the new season and buy 18yo trainees in the new season. Trainees tend to be cheaper the first 2 weeks of the season.
Not much point buying now as the trainees will age another year in just 3 weeks time.
Frankly speaking, none of your players seem to be worth the time to train. Better to train some of your players who has higher salary and younger than 22 yo on whatever is their strongest skill. This way you can get a higher bid in the TL when you sell him off.
Hope this helps.