The Eagles, as has been the case for more than a decade, can ill afford to be without Lane Johnson at right tackle.

The two-time All Pro left Sunday night's win against Detroit with a foot injury, though, and the initial diagnosis was a Lisfranc sprain that is expected to sideline the veteran offensive lineman for 4-6 weeks, per an NFL Network report from Monday .

That's a considerable amount of time to be missing a key piece of protection up front for the offense, and all in the home stretch of the regular season, while the playoff race really starts to shape up. But that also might be the best-case scenario for the Eagles.

Johnson is still waiting to undergo X-rays, The Philadelphia Inquirer's Jeff McLane reported Tuesday . The inflammation in his foot still needs to go down, an

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