The former Techical Director of the Football Association returned to club management in October to take over the reigns at Sunderland following the departure of Peter Reid. His last managerial post was at Leeds, where he left in October 1996, having won the League title in 1992.
Glenn himself worked with Wilkinson during his time as England manager.
"It wasn't a total shock," said Glenn of his return to the Premiership ranks. "If you spend a bit of time away from the forefront of the game, like Howard did, you miss it.
"I would imagine that is what enticed him back. To return to the daily routine of working with players and that battle at the end of the week for the three points. We are all striving for that and I would think that is what sparked him into coming back.
"He is an organised manager. You have to have respect for him, he has won the championship at this level and I'm sure in the long term he will do a good job for Sunderland."
Glenn Hoddle says he was not surprised that Howard Wilkinson was tempted back into the front line of club football.