Gabriel Jesus is back in full training with Brazil and set to start their match against Argentina on Tuesday night, according to reports.

Over the weekend, Globo Esporte reported that Gabriel Jesus is in line to start for Brazil against Argentina in midweek.
Jesus reportedly took the place of the injured Vinicius Jr. in a training session on Saturday, with fellow Gunners Gabriel Martinelli and Gabriel Magalhaes both in the team as well.
Globo Esporte claimed that Jesus is already in shape to play in the Argentina match, and he stayed behind as his teammates travelled to Colombia for the first game of the break precisely to focus on featuring in this game.

On Sunday, Fabrizio Romano reported that Jesus was in full training with Brazil, and ready to be part of Fernando Diniz’s squad for the game.
The Evening Standard then confirmed that Jesus has indeed returned to full training for the last two days, and he’s in contention to start the Argentina match.
By the time the midweek game comes around, Jesus will have had four full weeks out of action due to a hamstring injury sustained against Sevilla on October 24th.

Having him back fit will certainly be a boost to Arsenal, though his involvement with Brazil isn’t helpful.
With the Brazil game taking place on Wednesday at 00:30 GMT (UK time), the Arsenal trio set for involvement in the clash would have less than 72 hours to get back to England, adjust to the timezone, and then potentially feature again in the Brentford match.
For Gabriel and Martinelli, that seems tricky but possible. For Jesus, having just returned from injury, it may prove to be too much.