Sure. One of the things that hurt Manning in 2003 and 2004 against the Patriots was that he was too stubborn to not "play his game", particularly against a great defense and in the cold and snow. He would continually try to go downfield against us even though it simply wasn't there. In the 2006 AFCCG, he lit us up using primarily Dallas Clark. One could argue that was because Alexander was covering Clark instead of Rodney, who was sitting at home watching the game, but the fact stands that his possession receivers, particularly Clark, killed us in that game. Manning was consistently going to that area of the field. Clark had 6 rec. for 137 yards in that game. In Super Bowl XLI he had the second most receptions on the team. Addai had 10 and he was roughly patrolling the same area of the field that Clark was.
Some more stats for Manning's slot receivers since then...
2007: Clark - 58 rec., 616 yds, 11 TD's; Gonzalez - 37 rec., 576 yds., 3 TD's; Noteworthy - Clark was the team's second leading receiver, behind Reggie Wayne.
2008: Clark - 77 rec., 848 yds., 6 TD's; Gonzalez - 57 rec., 664 yds., 4 TD's; Noteworthy - Clark was once again the team's second leading receiver, Gonzalez was the third.
2009: Clark - 100 rec., 1,106 yds., 10 TD's; Collie - 60 rec., 676 yds., 7 TD's; Noteworthy - Clark was the team's second leading receiver, Collie was the 4th.
2010: Clark - 37 rec., 347 yds., 3 TD's; Collie - 58 rec., 649 yds., 8 TD's; Noteworthy - Clark only played in 6 games while Collie played in 9, starting 6. Clark was replaced by Tamme, who logged 67/631/4, and Collie was replaced by Blair White, who logged 36/355/5.
2011: Lost season.
2012: Stokley - 45 rec., 544 yds., 5 TD's; Noteworthy - Stokley was very old.
As you can see, since the playoff victory over the Pats in 2006, Manning has regularly used his slot receivers. From last season to this season, he's seen a substantial upgrade at that position. I'd be shocked if he doesn't look Welker's way early and often.