It has been suggested that the Brazilian Telles could be used as a makeweight in the deal to land the teenager, but those deals are never as straightforward as suggested.

The player’s agent is Miguel Pinho — who also represents Bruno Fernandes, who swapped Sporting for Old Trafford last year, which could play in United’s favour.

Mendes is set to be in-demand this summer and his future is worth keeping an eye on.