Manchester United are stepping up their pursuit of Sporting CP midfielder Joao Mario.
A Bola says United are ready to firm up their interest in Joao Mario.
A Red Devils scout was in attendance for last weekend's fixture against Porto.
And they are set to launch a major bid at the end of the season for the 23-year-old's services.
Mario is under contract at Sporting until 2020 but his deal contains a £47.3m (€60m) release clause.