He feels the Champions will be mindful of the defeat at Old Trafford earlier in the season, and insists: "They will obviously be looking for a bit of revenge on us because I think that game upset them quite a bit - but I think it has worked for them well because they have been superb ever since.
"I think we made them angry because I don't think they have lost since we beat them 1-0 - and on the Wednesday night after we beat them they beat Derby by five.
"Hopefully it will be a great occasion for us and from a personal point of view I have got a lot of friends and family coming down for this one, so it would be great to send them away with a good result. I think this fixture always attracts a lot of your friends and family.
"People love watching Man United play as much as watching West Ham play and these games are normally exciting."
Christian insists the players are not overawed by the size of the attack, and adds: "We are capable of beating anyone, especially at home, so it is going to be a good game.
"There is a little sniff of catching the teams above us because we are not that far away from some of them now, and it would be terrific to get the points from this game.
"I am looking forward to it. It is just a great game when any team plays against them and I think Manchester United have learnt to deal with it being a massive game for their opponents.
"It is always exciting and it is no different for us this Saturday."
Christian says there is no difference in approach for this match and explains: "We more or less prepare the same for this game as any other game. We are always quite thorough in our preparations and it is just a case of trying to do the best we can.
"We set ourselves up as normal and we hope it is good enough. I think we have learnt more and more as the season goes on exactly what Glenn's ideas are.
"Obviously it takes time but it has definitely been a good progression so far, and we hope it continues in what is a big game and a big test of that.
"We are learning our positions and exactly what Glenn wants us to do, and I think the whole team is benefiting from that, especially at home."
Christian thinks a victory at the weekend would be a suitable launch pad for a tilt at Europe, and adds: "If you string a few wins together, without a doubt there will be a chance. I suppose it is a bit of a long shot but those are the facts and it is one of the things that gives us an added incentive.
"It can happen if we can get results, and you have to test yourselves against the best - which they are.
"It is very enjoyable, it is obviously a pleasure to play with Tomas and we are getting on really well on and off the field, but I think more than that it is a team thing and we are definitely looking more solid as a group.
"We feel we can turn it around away from home as well, because we have been more solid but a bit unlucky at times recently."