The pair both missed the Red Devils' 3-2 Premier League win over Tottenham on Saturday due to coronavirus and there were concerns they could miss Tuesday's Champions League last-16 second leg with Atletico due as a result too.
However, those fears appear to have been allayed after the duo were spotted arriving for training on Monday morning.
Fernandes and Shaw drove into the club's Carrington base as preparations continue for Tuesday night. The Red Devils later confirmed that both did take part in training.
Need a VPN? Or seeking to switch? Then support Tribal Football by clicking here to sign up with our official partners NordVPN. Not only will you receive the best VPN experience, but also great discounts by signing up via Tribal Football. Thanks for your support!