Benfica left-back Alex Grimaldo is interesting Arsenal and Tottenham.
Arsenal did sign Kieran Tierney from Celtic in the summer and have Sead Kolasinac who can play on the left side.
But Grimaldo continues to turn in top-drawer performances and would be an instant improvement.
Spurs have Danny Rose and Ben Davies at left-back.
A Bola says it will take a bid of around 34million to tempt Benfica into selling.
Barcelona are due 15 per cent of any transfer fee after they sold Grimaldo in 2015 - with the Catalan giants also linked with launching a bid themselves.
