Embed from Getty Images Nottingham Forest are on the very cusp of appointing Martin O’Neill as their new manager, with Roy Keane also hired as his erstwhile assistant. Both former Forest players, the pair have been offered 18-month contracts and will replace Aitor Karanka, who was sacked last week with the team lying four points outside the Championship play-off positions with 20 fixtures remaining. As with Stuart Pearce’s ill-starred prodigal return to the banks of the Trent a year or two…