Celtic FC scouting Tiago Araújo

Greg Taylor has made the left-back position his own since replacing Kieran Tierney at Celtic four-and-a-half years ago.

But Estoril defender Tiago Araujo could be the man to take his jersey. Brendan Rodgers has been linked with a January swoop for the Benfica academy graduate, with Alexandro Bernabei deemed surplus to requirements at Parkhead. Scotland international Taylor sparkled under Ange Postecoglou after evolving into an inverted full-back but the 26-year-old has struggled to maintain that form this season.

Solid domestically, the ex-Kilmarnock star has looked out of sorts at times on the continental stage and if Celts are to improve their European record, Taylor's position could now be under threat. Araujo is the man the Hoops have been keeping tabs on after starring in the Primeira Liga and here, Football Scotland examines what he may be able to offer.