'I am rejuvenated' - O'Neill keeps door open to stay on at Celtic

Martin O'Neill has kept the door open to staying on at Celtic after delivering a dramatic Scottish Premiership title, saying the club has given him life again.O'Neill came out of retirement twice to help turn Celtic's fortunes around this campaign, firstly stepping in following the departure of Brendan Rodgers and then after following Wilfried Nancy's disastrous 33 days in charge.