Notably, it has been claimed the Portuguese is prepared to end Radamel Falcao’s loan deal and sell Diego Costa in a bid to get the reigning Premier League champions’ season back on track.
If one of these reports becomes a reality, however, it could result in quite the opposite.
Chelsea are not a pretty side. They are a side adept at winning the dirty way and no player fits the bill for such a club more than Costa.
With just 10 goals in 2015, there is no question Costa is performing well below the standards expected at Stamford Bridge; the Brazil-born striker, though, remains the quintessential player for Chelsea and, crucially, for Mourinho.
While many have been critical over his dramatics on the field since the Premier League campaign kicked off in August; his bullying – his unnecessary quarrels; his penchant for falling to the floor under minimal contact – he has one key quality few others at Chelsea have had over the past four months: a desire to remain in the spotlight.
Cesc Fabregas, Eden Hazard and Nemanja Matic have been hiding since the start of the season, but Costa has not. It’s those shying away who should be the real concern. The trio listed above – and more – deserve every ounce of criticism that has been directed their way.
Costa frustrates and enthrals like no other striker, bar perhaps Newcastle United’s Aleksandar Mitrovic, across Europe. He is one of a very rare breed of conventional forwards who must be carefully nurtured, and Mourinho simply cannot afford to lose such a player and character.
It must also not be forgotten that Costa has been leading the line with little to no service. There has been no magic pass from Fabregas, no cutting edge from Oscar, and no burst into the box from Hazard.
He has been working tirelessly to create something – anything – that could lift those around him but, so far, to no avail.
Mourinho is notoriously difficult to please (just ask Juan Mata, Kevin de Bruyne and Cristiano Ronaldo), and in order to make it under him, a player – no matter his reputation – must be prepared to, as traditional football fans say, ‘get stuck in’.
Costa is certainly unafraid of meeting such intense demands.
The truth is, however, that Chelsea need more – but this is not a new fact. Even upon his £32million transfer from Atletico Madrid in July 2014, there was the harsh feeling that, whether in one or two seasons’ time, their attack would again require significant addressing in the market.
This reality has now hit south west London with more brute force than could possibly have been anticipated.
There was an attempt to confront the growing problem in the summer with Falcao, but this was a signing that never enriched supporters with excitement.
It was one that left outsiders – and perhaps insiders – believing the reasoning behind the Colombian’s arrival at Stamford Bridge was merely part of a challenge to further satisfy the ego of Mourinho. With Louis van Gaal failing to revive the centre forward’s career at Manchester United, Mourinho appeared eager to be the man responsible for any possible resurgence.
Sadly, though, Falcao appears finished – certainly at the highest level – and Chelsea simply cannot afford to have such players in a title-winning squad.
Falcao’s present career seems similar to Fernando Torres’ spell with the Blues, albeit fortunately without a huge transfer fee. As brutal as it may seem, he has to go.
His wages would be better spent elsewhere and there are plenty of viable options that could take the place of the former Porto and Atlético Madrid striker – even Patrick Bamford or Tammy Abraham.
The vulnerability of Chelsea, which was so well hidden last season, has been exposed, and perhaps the most worrying of all is that in having Costa as their ever-present leading striker, the Blues have now become what most sides fear – predictable.
In their title-winning campaign, Chelsea were predictable and unpredictable simultaneously. Their starting line up was perhaps the most calculable in the Premier League, with Mourinho rarely making changes to his side, yet it didn’t matter. They were confident, and as Jamie Vardy has illustrated this term, confidence – more so than quality – can be the key ingredient to sustained success.
Something, however, has gone dreadfully wrong behind the scenes at Chelsea, which has consequently seen the self-belief of the players sink into the abyss.
If Chelsea plan on bringing in Cristiano Ronaldo and Zlatan Ibrahimović to replace Costa then by all means, Mr Abramovich, make it happen.
If they are targeting the likes of Gonzalo Higuain and Javier Hernandez, though, as reports would have us believe, this is not the level of class that will save their campaign from disaster – and is certainly not worthy of taking over from the Blues’ no.19.
There would be no harm in Mourinho handing Costa a period on the bench amid his poor form, but to sell him would be devastatingly extreme.
Roman Abramovich and Jose Mourinho must therefore ask themselves what would come from selling one of the club’s most charismatic, determined and relentless players midway through the season?
The likelihood is that it would offer little more than a few extra million pounds in the bulging bank of the club’s Russian owner.