A 19 year old is one for the future? No shit.
The Brazilian season ends 5 December.
So he will have had a month off before the window even opens for him to come back. That's more holiday Than a lot of our players got in between seasons.
After that, maybe another week or 2 off if he really needs it, he'll come into the squad and start training and soon enough playing.
He's u21 in the Premier League and he can take Iheanachos foreign place in the Champions League come January when Iheanacho becomes u21 qualified.
Also the loan deal wasn't a sweetener, it was a condition that the player himself insisted on. He refused to leave before January because he wants his local club to win the league for the first time in 20 years.