The biggest question over the team sheet will probably come here. You're either Team DDG or Team Lindegaard.
Over the past couple of weeks there have been several articles on B/R and the rest of the Internet weighing up the pros and cons of each goalkeeper.
Lindegaard had kept five clean sheets in a row up until the embarrassment at St. James' Park (can't bring myself to calling it the SportsDirect Arena), whereas DDG has only racked up five all season, and has had the grace of of more appearances.
The key issue behind the goalkeeping "crisis" is that Ferguson needs to pick a goalkeeper and stick with them. Injuries have meant that the back line has been changing on a weekly basis and this has clearly affected the communication amongst the defence. Changing the goalkeeper every other week is only exacerbating the issue, and is a contributing factor which could be avoided by sticking to one 'keeper.
So why have I think DDG will face City? De Gea was signed to play in big matches like these, so there's no reason why Sir Alex should be shying him away from them, regardless of his age. This match is a chance for him to prove himself to his manager and the supporters and he is totally capable.
Ex-Man United 'keeper Mark Bosnich said the following to espnstar.com:
He [Sir Alex Ferguson] needs to make a decision and stick with one, you couldn't really fault Lindegaard against Newcastle but that misunderstanding with Phil Jones was because they haven't played together, week in and week out. I understand you have to rotate players but in the key positions, and being a goalkeeper is a really key position, that understanding must be second nature and that was the result of the third goal.
Extra reading: Why Sir Alex Ferguson Will Stick By David De Gea