Sky Sports understands that Millwall winger Dany N'Guessan has been the subject of enquiries from Charlton and Sheffield Wednesday.
The 25-year-old forward took in a loan spell with the Addicks last season as they secured the League One title.
Charlton boss Chris Powell is keen to bring N'Guessan back to The Valley and add him to his Championship plans.
He is, however, set to face competition for the Frenchman's signature from second tier rivals Wednesday.
The Owls are looking to add creativity to their ranks and believe N'Guessan would be a shrewd purchase.
The former Lincoln and Leicester man appears to be out of favour at The Den and played no part in Millwall's 2-0 defeat to Blackpool on Saturday.