Andy Gray can't wait to see if Alex Ferguson can outwit Carlo Ancelotti on the day he makes United history.
Epic battle of minds in store as Carlo and Sir Alex square up, says Andy
Although they will both play it down, Sir Alex Ferguson and Carlo Ancelotti will be absolutely chuffed to bits with their club's respective Champions League draws and now they can fully focus on this weekend's massive Premier League game.
Sir Alex will become United's longest-serving manager when his side visits Chelsea on Sunday - an achievement that should never be underestimated, particularly in times like this when managerial sackings are all too frequent.
It's easy to say that we won't see his likes again in the game but I honestly believe that we won't.
There's no way in the world that I think a modern manager will ever stay at the same club for as long as Sir Alex has at United; his 24 years in charge are a testament to his fitness, his drive, his desire, his attitude.
He now has a record 19th league title in his sights but of more immediate concern is United's run of poor form at Stamford Bridge, where they haven't won since April 2002.
Sir Alex would love to win in London on Sunday on two counts - firstly to improve that record and secondly to gain more crucial ground over Chelsea in the Premier League title race.
I still think that the team that finishes above Chelsea this season will be champions because I'm convinced Ancelotti's side will get through this difficult spell they are having and come out even more determined to hold onto their title.
Priority
The priority for Sir Alex this Sunday is not to lose and so far this season United have been able to get very big results even when they've played poorly - something Arsenal haven't quite grasped yet.
United did exactly that on Monday when Arsenal went to Old Trafford full of confidence, believing that this is their year and that they are capable of locking horns with the biggest and still win - but they didn't.
That doesn't mean to say that they are out of it but Monday's defeat is definitely a setback to their title hopes.
We'll only find out for certain exactly what Sir Alex's mindset is when he names his side on Sunday.
Will he keep Dimitar Berbatov on the bench and keep the formation that overcame Arsenal, or does he feel he can handle Chelsea better by playing two up top and four in midfield?
The absence of Paul Scholes is only an issue if Sir Alex had decided to play him.
Scholesy had a fantastic start to the season - he was by far one of the most inspirational players in United's ranks at that time - but he hasn't been able to achieve the same heights recently, partly due to injury.
I'm sure Sir Alex would have loved to have Scholesy available for this one, for his experience alone, but there are clear signs that Anderson is finding his form and fitness which is a big boost for United.
Anderson played ever so well against Valencia (although not quite as well against Arsenal as he could and should have done) and Darren Fletcher is back fit and firing which is a definite bonus.
Unique
Chelsea's midfield is also shaping up nicely.
It's been pretty clear over the last few weeks that they can't replace Frank Lampard. There's no other player in the squad that does what he does - he's unique - so his return to the starting XI is massive.
Frank contributes wholly to the team and scores more goals from that area of the pitch than any Chelsea midfield player could ever dream of doing.
His comeback should help ease some of the pressure on Carlo, who this week had to come out and reaffirm his commitment to the club.
The only way you stop speculation these days is to deny it and the denial has to come straight from the horse's mouth.
Carlo's now done that - he's said quite categorically that he's not going anywhere before 2012 and hopefully that will be the end of the matter regardless of this weekend's result.
His team seems on the up after winning six points from seven games. They played much better against Tottenham than they have in previous weeks, showing plenty of fight after going behind. In the end they thought they should have won the game and they are probably right.
I don't think Chelsea will lose this weekend, particularly with home advantage but it will be interesting to see how Carlo plays it.
He could be extremely positive and bring Didier Drogba back, shove Nicolas Anelka to one flank, put Salomon Kalou on the other and go with Michael Essien instead of John Obi Mikel in the middle alongside Lampard and Malouda.
That would be a clear statement of intent.
Whatever happens it will be a pleasure to see two of the biggest hitters in domestic management going head-to-head.
We'll enjoy the pre-match and post-match with them - both of which will entertaining in their own right - and hopefully the contest itself will resemble a tennis match rather than a game of chess.
To put it another way, I hope it is more like Chelsea-Tottenham than United-Arsenal; that it's an open game with plenty of adventure.
That's a big ask because the stakes are so high but the potential rewards are even greater for each side.
