Cape Town - Arsenal centre-back Gabriel could miss the Champions League visit of Barcelona next week as he is undergoing treatment on a hamstring injury in Brazil.
The 25-year-old sat out the top-of-the-table clash with Leicester on Saturday with what the Gunners described as a "slight" problem with his hamstring.
Rather than let the north London club's medical staff treat the injury, Gabriel has returned to former employers Vitoria for his recovery.
Leao da Barra posted a photo of their youth product with physiotherapist Michel Aguiar at the Complex Barradao treatment facility.
"The confidence I have in all this is very important," Gabriel told the club's official website.
"I have great affection for this shirt. Vitoria is like a real family and I'm very happy to see the club as well. I feel at home."
The FA Cup champions have not announced when they expect the defender back at the Emirates Stadium, but he will likely be absent for the cup-tie against Hull this weekend.