Top scorer Cristhian Stuani is among those who are back in contention ahead of the trip to the Etihad.
Grant Leadbitter's absence has been keenly felt at the Riverside this season, so its no surprise Karanka is so pleased by his availability.
Middlesbrough manager Aitor Karanka has stated that midfielder Grant Leadbitter could be close to a return.
The club have also confirmed that Husband and Ayala are set to be sidelined.
Karanka's men can go back to the top of the Championship table with a victory over Leeds.
Middlesbrough will take on Leeds United at Elland Road in the Championship on Monday evening.
Leeds United will face Middlesbrough at Elland Road in the Championship on Monday evening.
Grant Leadbitter leads his team into Friday night's second leg against Brentford hoping to go one better than his only Wembley experience so far.
Nottingham Forest will face Middlesbrough at the City Ground in the Championship in a few hours’ time.
Leeds United star Lewis Cook is behind Middlesbrough midfielder Grant Leadbitter in several areas despite only having played one game less this season.