PITTSFORD -- Cordy Glenn missed another day of training-camp practice with the Buffalo Bills Sunday.
Given that Glenn also missed last Thursday night's preseason-opener against the Minnesota Vikings and the timing of his return to action is uncertain, there is lingering worry about the left tackle's health.
"We're still concerned about it," McDermott said before Sunday's workout at St. John Fisher College. "We're hopeful, so we'll just take it one day at a time and we'll look forward to getting him back on the field."
Asked if he expected Glenn to be ready for the Sept. 10 regular-season opener against the New York Jets, McDermott said, "We're hopeful, we're hopeful."
After soreness developed in his left foot, Glenn, who missed offseason workouts because of a chronic issue with his left ankle, had sought a second medical opinion from Charlotte specialist Dr. Robert Anderson. McDermott said he wasn't aware of Glenn making any additional visit to Anderson.
However, the coach did say, "We're looking at some things right now, but right now it's just day-to-day."
In the event Glenn remains out of the lineup and with his immediate backup, Seantrel Henderson, due to be suspended for the first five games of the season, McDermott said rookie Dion Dawkins "would potentially move over" from right to left tackle. For now, though, the coach said the priority was to get Dawkins "comfortable" on the right side, where he is challenging Jordan Mills.
However, McDermott noted that the work Dawkins did in Glenn's place during the offseason "should serve him well if needed."
"I've liked part of what I've seen (from Dawkins)," McDermott said. "The rest of it is him getting used to playing in the NFL, just getting up to speed on adjusting to NFL techniques and adjusting to NFL life. And that's typical, so there's not any reason for concern at this point. He's doing a good job.
"And give credit to Jordan Mills. Jordan Mills is not easily giving up that position, either. He's fighting and having a nice camp and had a great spring, so there's a good competition going there and that's only going to make us better."
Others who didn't practice Sunday were receiver Jeremy Butler (concussion protocol), safety Bacarri Rambo (hamstring), offensive tackle Michael Ola (toe), and cornerback Kevon Seymour (foot).
Safety Colt Anderson has been activated from the physically-unable-to-perform list and returned to practice Sunday.