The report says that the bid will come in this week although Martin O’Neill will have to also fight off interest from Tottenham Hotspur.
Rovers boss Sam Allardyce will hold out for at least £7m, but he is fighting a losing battle to keep the defender.
O'Neill has been interested in the player for some time and he is back in the race to sign him after he had a £2 million bid for Portsmouth defender Sylvain Distin rejected.