Celtic manager Neil Lennon would not let Kris Boyd's Rangers background sway him if he were to consider making a bid for the former Ibrox striker.
Boyd this week terminated his contract with Turkish club Eskisehirspor following a dispute over unpaid wages.
Lennon addressed the question of Boyd's availability by saying: "He is a proven goalscorer. I don't know how much football he has played of late.
"But he has a great record and any player like that would interest me."
Lennon, who denied he had made an official approach for Dundee United's Scott Allan, has already secured the services of Swedish full-back Mikael Lustig on a pre-contract agreement.
When pressed on adding Boyd, the Scottish Premier League's all-time leading goalscorer, to his squad next month, Lennon replied: "You are taking hypothetically here and are starting to speculate already.
"But regards to that question (would it be a problem that Boyd had played for Rangers?) no, I can't see it being a problem.
"But again, I don't want to talk about players coming and going until January."
Boyd has been strongly linked with a return to Rangers. However, Ibrox boss Ally McCoist insists he has had no contact with the 28-year-old.