Mark, a West Ham fan who was on Spurs' books before securing a dream move to Upton Park in 1992, was co-commentator for the official West Ham United website at Monday's 4-4 draw at The Valley, where he now works as Charlton's under-19 coach.
And he predicts that Ferdi will be the biggest threat, explaining: "Les Ferdinand is one of the best 'leapers' - as I call him - in the game, and with the wingers they have got they will be putting balls into the box.
"Tottenham are on fire at the moment and the biggest problem will be at the back.
"Every time Charlton got the ball in the box they looked like they might score or cause problems. Glenn Hoddle was there on Monday and he will have taken note."
Of the Charlton game, he says: "West Ham produced some excellent football but couldn't go 2-0 up and then it got a little scrappy before Charlton got a grip in midfield and deservedly equalised.
"It was a great goal for Jermain - he handled the volley very well after it hung in the air.
"And Glenn must be absolutely delighted with Paul Kitson, not just for the goals but the way he linked up with Sinclair and Di Canio and held the ball up well. His movement was excellent and I'd say he was West Ham's man of the match.
"It was a delightful game for the fans and everyone stood up to applaud at the end, but it was heart attack time for the managers.
"There was an abundance of quality going forward so Fredi Kanoute might not be missed on Saturday."