Mike Zimmer's seat continues to get hotter and hotter, and a Vikings loss to Pittsburgh could be the last straw. Brace Hemmelgarn-USA TODAY Sports

Talk of potential coaching changes is already taking hold around the NFL. One situation might be bad enough, however, that the team may not even wait until the end of the season to make a change.

Minnesota Vikings coach Mike Zimmer is firmly on the hot seat and may not even last until the end of the season, according to Jason La Canfora of CBS Sports. The Vikings are 5-7 and highly unlikely to make the playoffs, and they are coming off a loss to the lowly Detroit Lions. Zimmer’s calling card is usually his defense, but the unit has given up 382 yards per game, the third-worst mark in the league.

Worse yet is the fact that Zimmer appears to be wearing on his players and even his staff. The Vikings coach “continues to wear out players and coaches with his caustic manner,” La Canfora reports. Zimmer is on such thin ice that a loss to Pittsburgh on Thursday night could be enough for the Vikings to fire him with four games remaining in the regular season.

It’s not a huge surprise that Zimmer is in trouble. Although he has a 69-54-1 record as Minnesota’s head coach, the team is poised to miss the playoffs in consecutive seasons for the first time since he took over in 2014. That so-called “caustic manner” has been on display publicly as well as privately.

It’s bad enough that Zimmer is getting called out by one of his Vikings predecessors, which has to be hugely embarrassing.

More must-reads:

TODAY'S BEST
Pacers' Pascal Siakam leads team to Game 6 win vs. Knicks
Watch: Matt Duchene's 2OT winner sends Stars to conference final
Scottie Scheffler shoots improbable 66 after warming up for PGA Championship in a jail cell
Report: Tua Tagovailoa away from Dolphins amid contract chatter
Nuggets star has worrying comment about latest injury
Paul Skenes makes incredible Wrigley Field history in second-career MLB start
Giants rookie CF to undergo season-ending labrum surgery
Yankees' Juan Soto reacts to Hal Steinbrenner contract talk
Late goal sends Panthers to Eastern Conference Finals
Ex-teammate of Shohei Ohtani placed bets with same illegal bookmaker as interpreter 
Former Rams first-round pick retires from NFL after 11 seasons
Insider provides major injury update on Celtics' Kristaps Porzingis
Watch: Bruins strike first in Game 6 with incredible backhand goal
Dodgers make series of moves involving notable players
Hurricanes not expected to re-sign defenseman, center
Maple Leafs tab former Stanley Cup winner as new head coach
NFL insider expands on competition between Steelers QBs Russell Wilson, Justin Fields
NFL sets outrageous prices for Eagles-Packers Brazil game
Broncos 'very unlikely' to bring back former NFL interceptions leader
Greg Olsen offers broadcasting advice to Tom Brady