The battle to finish in the top four in the Premier League is shaping up to be a close one, with Chelsea, Tottenham, Sheffield United and Wolves all involved.
Chelsea currently occupy fourth spot in the table, with Frank Lampard's Blues holding a two point advantage over Sheffield United, with a game in hand, while Tottenham currently trail their London rivals by four points.
Manchester United and Wolves are both one point behind Spurs with 13 games to play, with United set to face Chelsea at Stamford Bridge in their next game after the winter break.
And former Chelsea and Manchester United goalkeeper Mark Bosnich has stressed the importance of that game in west London in the context of the race to qualify for the Champions League next season.
Indeed, he feels that a defeat for United could be pivotal in the battle for the top four.
"I don't think it's win or bust, but you could lean towards it being lose or bust," Bosnich said, speaking to Sky Sports.
"I think it's a must not lose. The gap will be a little bit far to catch up if they lose, but not win or bust no.
"They're not far off and Chelsea will be looking to this with Tottenham breathing down their necks and they're at home.
"They both had a week's break, so it will be a very important game for both sides. For Chelsea and Frank Lampard they will be looking to get breathing space between them and the chasing sides.
"In terms of Ole [Gunnar Solskjaer] they're not far off at all and what a psychological boost it would be if they could win at Stamford Bridge, especially given the signing of Bruno Fernandes.
"It's a massive game for both sides."
United and Chelsea have already met twice this season, with the Red Devils winning 4-0 at Old Trafford on the opening day of the Premier League campaign, before winning 2-1 at Stamford Bridge in the Carabao Cup.
