nash or any one please, need some suggestion

that 10T academy DC, today I burn his 48% condition and he gain 17% skill points, now he is 74%
question is, do I should give him another position or sp before he reach 80% or wait for next season as only 6 days left on this season.
also keep in mind he going to loss 20% on next season, which is 3* and 19 yo
what will be best please?
thanks