The Brazilian midfielder has been sidelined since the Manchester derby win over United due to a knee injury, but wore strapping on the affected area during training this week and there is hope he will be fit to play at least some part at Wembley.
Kevin De Bruyne could return to the first XI after coming on as a late substitute on the final day of the Premier League season having recovered from a hamstring issue.
Vincent Kompany is expected to play in what could be the final competitive appearance of his 11-year City career, but Benjamin Mendy recently returned to Barcelona for further treatment on a lingering knee problem and will not feature.
Claudio Bravo (Achilles) remains a long-term absentee.
Jose Holebas is available for Watford after seeing an appeal against his dismissal in the defeat by West Ham last weekend upheld by the FA.
The veteran left-back was sent off shortly after half-time of the heavy 4-1 loss at Vicarage Road for bringing down Michail Antonio, but the red card was rescinded 24 hours later.
Semi-final hero Gerard Deulofeu was substituted against West Ham with a dead leg and did not take part in full training on Wednesday, but is set to be fit and available for selection for this weekend’s final.
Tom Cleverley is also in contention despite having only played 24 minutes of football since returning from a calf injury earlier this month.
However, Sebastian Prodl (knee) and midfielder Domingos Quina (shoulder) are both absent.