Jay Glazer reported on his Twitter page that Eagles quarterback Donovan McNabb will miss this Sunday’s game against the Saints with a fractured rib. After that, it’s unclear how long he’ll be out.

Philadelphia will likely start Kevin Kolb under center this week, although rumor has it that the team might re-sign A.J. Feeley to compete with Kolb in practice. Either way, the Eagles will suffer a downgrade at quarterback.

The Eagles are a Super Bowl contender this year, but not without McNabb. Kolb has struggled in the brief opportunities he’s recieved over the past couple years and it’s looking more and more that the former second rounder was a bust pick for Philly.

Of course, if McNabb misses an extended period of time and Kolb struggles, Michael Vick comes off his suspension in Week 4 and could start. But chances are that Andy Reid would stick with Kolb for as long as he can, seeing as how Vick hasn’t played in two years outside of a couple preseason games.

This will be an interesting situation to watch develop over the next couple weeks.