By Rob Parrish Last updated: 19th April 2008
Kevin Keegan has backed Roy Keane to step into the Manchester United hot-seat when Sir Alex Ferguson eventually calls time on his career.
The Newcastle boss goes head-to-head with his Sunderland counterpart in Sunday's Tyne-Wear derby showdown at St James' Park, live on Sky Sports 1.
And Keegan fully expects Keane to one day be managing the Old Trafford giants after learning the trade with the Black Cats.
Keegan said: "Will he be manager of Manchester United on day? You would not bet against it, would you?
"There's Roy and Mark Hughes at the moment and then there is still Sir Alex, who will still be there for another 30, 40 years.
"Roy is getting a grey beard now, he might have a longer one by the time he gets it.
"I said to Alan Shearer the job will come for him at Newcastle United - and it will come for Roy Keane at Manchester United after Sir Alex."
Former England boss Keegan is relishing the derby meeting with their bitter local rivals, and is looking forward to more Premier League meetings between the two in years to come.
He added: "Roy has proved to be a very, very successful manager at Sunderland in getting them up and to stabilise them in this division.
"I know some of our fans say they'd like to see them go down, but these games are very special.
"This is our biggest game of the year."

Latest Sky Sports News Report
Zola gets vote of confidence
Paper review - 10th February
Chelsea v Arsenal
Birmingham v Wolves
Portsmouth v Sunderland - 1st Half
Wigan v Stoke - 2nd Half
Wigan v Stoke - 1st Half
| Time | Fixture |
|---|---|
| Wednesday 10th February | |
| Barclays Premier League | |
| 19:45 | Arsenal vs Liverpool |
| 19:45 | Aston Villa vs Man Utd |
| 19:45 | West Ham vs Birmingham |
| 19:45 | Wolverhampton vs Tottenham |
| 20:00 | Blackburn vs Hull |
| 20:00 | Everton vs Chelsea |
| Tuesday 16th February | |
| Barclays Premier League | |
| 19:45 | Stoke vs Man City |
| Wednesday 17th February | |
| Barclays Premier League | |
| 20:00 | Wigan vs Bolton |
| Saturday 20th February | |
| Barclays Premier League | |
| 12:45 | Everton vs Man Utd |
| 15:00 | Arsenal vs Sunderland |
| 15:00 | West Ham vs Hull |
| 15:00 | Wolverhampton vs Chelsea |
| 17:30 | Portsmouth vs Stoke |
| Sunday 21st February | |
| Barclays Premier League | |
| 14:00 | Aston Villa vs Burnley |
| 15:00 | Fulham vs Birmingham |
| 15:00 | Man City vs Liverpool |
| 16:15 | Wigan vs Tottenham |
| Monday 22nd February | |
| Barclays Premier League | |
| 20:00 | Blackburn vs Bolton |
| Tuesday 23rd February | |
| Barclays Premier League | |
| 20:00 | Man Utd vs West Ham |
| Saturday 27th February | |
| Barclays Premier League | |
| 12:45 | Chelsea vs Man City |
| Time | Result |
|---|---|
| Tuesday 9th February | |
| Barclays Premier League | |
| Man City 2 - 0 Bolton | |
| Wigan 1 - 1 Stoke | |
| Portsmouth 1 - 1 Sunderland | |
| Fulham 3 - 0 Burnley | |
| Sunday 7th February | |
| Barclays Premier League | |
| Birmingham 2 - 1 Wolverhampton | |
| Chelsea 2 - 0 Arsenal | |
| Saturday 6th February | |
| Barclays Premier League | |
| Liverpool 1 - 0 Everton | |
| Hull 2 - 1 Man City | |
| Stoke 3 - 0 Blackburn | |
| Bolton 0 - 0 Fulham | |
| Sunderland 1 - 1 Wigan | |
| Man Utd 5 - 0 Portsmouth | |
| Burnley 2 - 1 West Ham | |
| Tottenham 0 - 0 Aston Villa | |
| Wednesday 3rd February | |
| Barclays Premier League | |
| Fulham 1 - 0 Portsmouth | |
| Tuesday 2nd February | |
| Barclays Premier League | |
| Hull 1 - 1 Chelsea | |
| Monday 1st February | |
| Barclays Premier League | |
| Sunderland 0 - 0 Stoke | |
| Sunday 31st January | |
| Barclays Premier League | |
| Man City 2 - 0 Portsmouth | |
| Arsenal 1 - 3 Man Utd | |
| Saturday 30th January | |
| Barclays Premier League | |
| Birmingham 1 - 1 Tottenham | |
Portsmouth left it late to grab a point while Manchester City and Fulham were comfortable winners.
Norwich's success this season means more to Chris Martin than most, as Chris Burton found out.
See all the goals and major incidents involving YOUR team, right here on skysports.com.
Portsmouth are attempting to secure an adjournment in hearing their appeal against a winding-up petition.
Arsenal entertain rejuvenated Liverpool, live on Sky Sports HD2, while Chelsea and Man Utd face tough examinations on the road.
Barcelona have dismissed reports that they have reached an agreement with Cesc Fabregas to sign the Arsenal star.
Milan Jovanovic claims to have agreed pre-contract terms with Liverpool ahead of a summer switch.
David Sullivan has dismissed reports that Gianfranco Zola could be dismissed if West Ham lose to Birmingham.