Christian struck up a friendship with Ince during his spell at the Riverside, while the combative midfielder played a big part during Glenn's England years.
Both are full or praise for Ince's battling qualities.
"I knew him before and we had a great season together," said Christian. "I enjoyed every training session and every game with him.
"It's amazing how he plays football. You won't find many players who go both ways in his style. He goes forward looking to score goals and goes backwards to defend his own goal with the same determination.
"Not a lot of players have that - good at defending and going forward.
"He is pushing the team always, he is the man in the team. He is the one, even if the team is going down he is trying to push everybody to get the game back."
Glenn added: "Incey, I'll always have a lot of respect for Paul, he was a terrific international and has still got a lot to offer at club level. He'll look forward to coming to White Hart Lane and trying to turn us over.
"He's a competitor, and there's no better in the country than Paul Ince.
"I saw him play recently and I think he's still a very, very good footballer."
Christian Ziege and Glenn had no hesitation in picking out Paul Ince as one to watch ahead of the home clash with Middlesbrough.