Celtic have been linked with a number of players in this January transfer window, and now Ronny Deila's side are reported to be interested in a Sporting Lisbon star.

Carlos Mane is apparently being lined up on a loan move, with the winger open to a move to the Scottish Premiership champions.

Staying in Portugal, Ryan Gauld is reported to be going on loan - although he won't be making the move back home.

Manager Jorge Jesus is keen for the £3 million playmaker to experience first-team football in the second half of the season - with England a possible destination.

Meanwhile, Brentford manager Dean Smith has warned Rangers that they will not sign midfielder Toumani Diagouraga on the cheap, with the Ibrox side still eager to make a transfer happen.