Redknapp, 69, will combine the role alongside a coaching job with the Jordan national team.

Redknapp takes up his role with Derby with immediate effect and he will be at their home game against east midlands rivals Nottingham Forest on Saturday.

He told the club's official website, dcfc.co.uk: ''From the first conversation I had with the chairman it was clear he has exciting plans for the football club. I am delighted to be able to help out and am looking forward to working with Darren and his team."

Derby have been stuttering in recent months, winning just three Championship games in 2016, but president and chief executive Sam Rush feels having Redknapp on board, with the experience he brings, could give the Rams the edge as they look to win promotion to the Barclays Premier League.

''As we move into the closing stages of the season, we feel that Harry's know-how will be valuable to us. He brings a high level of awareness and understanding of the Championship promotion race,'' said Rush.

Derby are fifth in the Championship, seven points off the pace in the race for automatic promotion but with a three-point advantage over Cardiff, who are just outside the play-off places in seventh.

Redknapp began in management at Bournemouth in 1983. He spent seven years at West Ham before joining Portsmouth, where he had two spells in charge, winning the FA Cup in 2008.

During his time at Tottenham, Redknapp was named the Premier League Manager of the Year for the 2009-10 season and guided Spurs to the Champions League quarter-finals two years later.

As manager of QPR he won promotion to the Premier League via the 2014 play-off final, beating Derby thanks to a last-gasp strike from Bobby Zamora.