The West Ham boss has led his side to just one win in their last 10 games and could be on the brink of being the next top-flight managerial casualty
The pressure is mounting on Manuel Pellegrini after West Ham suffered their seventh defeat in nine games on Monday night with a 3-1 loss at home to Arsenal.
Angelo Ogbonna headed the Hammers into a first-half lead but a devastating 10-minute spell after the break saw Gabriel Martinelli, Nicolas Pepe and Pierre-Emerick Aubameyang all score to give the Gunners the points.
That result now means that West Ham are just one point above the relegation zone and 888Sport make Pellegrini just 33/100 (1.33) to be the next Premier League manager to leave their post.
Five managers have already been sacked this season, with ex-Everton boss Marco Silva being the most recent casualty but he is unlikely to be the last.
It looked as if West Ham would kick-start their season just last weekend when they stunned Chelsea 1-0 at Stamford Bridge, but a pair of defeats since then has seen them get dragged back into a relegation battle.
Norwich City manager Daniel Farke is next in the betting at 7/1 (8.0) with the Canaries currently second-bottom after losing eight of their last 11 Premier League games.
Since their remarkable 3-2 win over Manchester City in September, Norwich have won just once and sit on 11 points with the second-worst defence in the division, having conceded 34 goals.
Each of their previous two Premier League campaigns have ended in relegation and, with a four-point gap between them and safety already open, the packed Christmas period could prove pivotal for both Farke and the club.
Eddie Howe is currently the longest-serving Premier League manager but is 8/1 (9.0) to be the next manager to leave his post after a run of five defeats for Bournemouth.
That is the Cherries’ worst run in the competition since they gained promotion to the top-flight in 2015 and, despite Howe’s long reign at the club, a trip to Chelsea in their next match could pile even more pressure on the Englishman.
Ralph Hasenhuttl is a 9/1 (10.0) shot, with Southampton in the relegation zone, although the Saints have won two and drawn one of their last four games after a stretch of six losses in seven fixtures.