With eyes on him from the stands, the centre-midfielder scored in his side's 3-2 victory over Portimonense.
The 26-year-old was apart of the Portugal squad that claimed the Euro 2016 trophy, which included starting in the semi-final victory over Wales.
At 6'2, Danilo has long been a target of Arsene Wenger, who has been searching for a physically dominant holding midfielder since Patrick Vieira left the club.
United boss Jose Mourinho reportedly keeps an interest in players from his former club.
Qatari-backed Paris Saint Germain have also been eyeing in the former Maritimo man.
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!