Brown is one of the best midfielders in Scotland and has been on the books of Celtic since the summer of 2007 when he joined from Hibernian for a transfer fee reported by The Guardian to be worth £4.4 million.
The Scotland international is going strong despite being 32 years of age and remains a key figure at Celtic Park.
However, time will come soon for Celtic to start thinking about finding a long-term replacement for Brown.
Former Hibernian forward McManus, 36, has suggested that McGinn would be a good long-term replacement for Brown at Celtic.
Former St. Mirren youngster McGinn, 22, scored both the goals for Neil Lennon’s team against Brendan Rodgers’s side.
McGinn, though, could cost Celtic a lot of money, with Hibernian manager Lennon telling The Scottish Sun that he is now worth more than £5 million.
Do you get the feeling he's a good replacement for Scott Brown in the future of that Celtic centre mid?— Michael Wood (@MichaelWood_SJ) September 30, 2017