The Toronto Maple Leafs declined to provide a detailed update, but it’s clear that centre Dave Bolland’s ankle injury is likely to keep him out until deep into their season.

And perhaps even for almost all of it.

According to the team, Bolland suffered “a severed tendon on the outside of his left ankle” when Vancouver Canucks winger Zack Kassian’s skate clipped his foot on a check in the second period of Saturday’s game.

The Leafs lost the game 4-0 but the bigger hole is obviously now down the middle minus both Bolland and Tyler Bozak, who is out for at least another couple weeks with a hamstring tear or strain.

Both are on injured reserve, which has been a busy spot for Toronto so far this season.

Leafs coach Randy Carlyle declined to put any kind of time frame on Bolland’s recovery on Monday, saying specifics were hard to come by.

Bolland was wheeled out of Rogers Arena on a stretcher after the game, had surgery at a Vancouver hospital that night and didn’t travel back to Toronto with the team on Sunday.

“It’s too early to say,” Carlyle said of how long he will be out. “They don’t really give you that. They’ll say that it’s five months and then we hope it’s two. We don’t really know until the healing process starts and they’ll do an assessment. Then we’ll get more tightened in on the time frame for you.”

Given where Kassian’s skate cut him, Bolland’s injury most likely affected the peroneal tendons in his foot (peroneus brevis or peroneus longus), which help with pointing the foot and stabilizing the ankle.

According to Jo Innes, an ER doctor who writes a regular sports medicine blog for The Score, a non-athlete would expect a recovery time frame of three to four months from such an injury, depending on the severity of the cut and what was affected beyond the tendon.

While Bolland will obviously get top notch medical care and as a young athlete could be expected to recover quicker than that, the Leafs will almost definitely have to do without him until at least the early part of 2014.

Ankle injuries can be difficult for hockey players for obvious reasons, and if a four month recovery is the worst case scenario, that would mean he misses nearly 50 games.

The fact he required immediate surgery on Saturday was a bad sign.

“He’s out for the long haul,” Innes said on Twitter.