X-rays of the wide receiver's left ankle were negative, according to Rex Ryan. The team is calling it a low-ankle sprain, as opposed to the dreaded high-ankle, which usually takes several weeks for recovery. Harvin was in a walking boot Monday.
"What that means for Sunday, I'm not real sure," Ryan said. "It probably doesn't look that great, but we'll see as it progresses."
Harvin was injured with two minutes remaining in the fourth quarter of the Jets' 30-24 overtime loss to the Minnesota Vikings. He finished with five catches for 124 yards and a touchdown, arguably his best game since being traded by the Seattle Seahawks.
Harvin's injury history suggests he won't return quickly -- he missed 22 games in 2012 and 2013 -- but there is financial motivation for him to end the season on an upbeat note. He has said he'd like to remain with the Jets, but his 2015 salary -- a non-guaranteed $10.5 million -- could be prohibitive.
He has 25 catches for 306 yards and one touchdown in six games with the Jets, who continue their 2-11 seasons Sunday at the Tennessee Titans.
In other injury news, rookie tight end Jace Amaro -- out the last two games with a concussion -- could be cleared to return this week. Defensive end Muhammad Wilkerson, sidelined for two games with turf toe, will attempt to practice with a specially designed shoe.
Safety Antonio Allen broke his hand Sunday, but he's expected to practice and play.