Stoke City are eyeing Celtic striker John Guidetti.
The Swede is on-loan at Celtic from Manchester City, where his contract will expire next month.
Sporting CP are regarded as favourites for Guidetti, though O Jogo says they face English competition.
Stoke and ChampionshipBolton Wanderers are also in contact with Guidetti's representatives.
Sporting, however, are well down the line in negotiations, having tabled a contract offer and bumper signing-on bonus to the striker.