Out-of-favour Matt Mills could be offered a route out of Nottingham Forest, with Championship rivals Barnsley looking to replace Hull City target MacDonald.
Mark Warburton's side are flying high but not every Nottingham Forest player is performing at their optimum levels this season.
Celtic still need a centre-back and Brendan Rodgers ought to consider the 31-year-old.
Forest - and rivals Derby County - have been linked with the 19-year-old, while a return to Birmingham City has also been mooted.
West Ham United, Leeds United, Cardiff City and Derby County have all played their part in blockbuster finals.
Nottingham Forest are set to play Wolverhampton Wanderers on Tuesday evening.
Nottingham Forest suffered a 3-1 defeat to Championship table-toppers Newcastle United, with many Forest fans despairing over scorer Nicolao Dumitru and the dismissed Matt Mills.
Nottingham Forest lost 3-0 at Derby County on Sunday afternoon.
Nottingham Forest fell to an embarrassing 3-0 Championship defeat against east Midlands rivals Derby County. Here is how their players rated.
Nottingham Forest manager Philippe Montanier is likely to keep faith with a back three for the Championship encounter with Queens Park Rangers this weekend.