Cesc Fabregas has been involved in an alleged training ground bust-up with one of Chelsea’s promising youngsters.

The Spain midfielder reacted angrily after Charly Musonda flicked the ball over his head before nutmegging him in training.

Fabregas then unleashed a heavy challenge on the 19-year-old that sparked a melee among the players. Words were also exchanged between the pair.

Chelsea youngster Charly Musonda could make his first-team breakthrough after starring for the Under 21s

Musonda was involved in a training ground bust-up with Cesc Fabregas (right), pictured in training on Tuesday

Fabregas takes a touch during training as interim boss Guus Hiddink puts his players through their paces

Musonda slides in on Manchester City midfielder Bersant Celina during last season's FA Youth Cup final

WHO IS CHARLY MUSONDA? Date of birth: 15 October, 1996 Place of birth: Brussels, Belgium Position: Attacking midfielder Previous club: Anderlecht International honours: Capped at Under 17, 18, 19 and 21 level for Belgium Did you know? Musonda is the son of former Anderlecht and Zambia midfielder Charly Musonda Snr. Advertisement

The incident occurred last Wednesday, the day before Jose Mourinho was sacked. The Chelsea manager was at training that day and the Fabregas matter was dealt with at the time, with no club action being taken against him.

Musonda, an attacking midfielder, is a Belgium Under 21s player and impressed on Monday night during Chelsea Under 21s’ victory over Middlesbrough.

Musonda wants regular first-team football, preferably at Stamford Bridge, and is anxious to impress new boss Guus Hiddink. However, he is prepared to leave on a temporary basis.

Queens Park Rangers’ new boss Jimmy Floyd Hasselbaink is keen to take Musonda on loan when the transfer window opens next month and watched him against Boro. Representatives from Feyenoord and AZ Alkmaar were also in attendance at Cobham.

Jose Mourinho watches Brighton's defeat by Middlesbrough just two days after being sacked by Chelsea

Chelsea's players train at Cobham on Tuesday as they prepare to welcome Watford to Stamford Bridge

Hiddink, who has been placed in charge until the end of the season, leads his players in training at Cobham

Meanwhile, Carlo Ancelotti insists a lack of motivation from Chelsea players cost Jose Mourinho his job last week.

‘Keeping motivation high, that is the most difficult job for a coach because within a group, both one that is doing well and one that is doing badly, there are always problems to resolve,’ said Ancelotti, who managed Chelsea for two seasons from 2009-2011.

‘When things are going well, there is a risk of relaxation; when things are going badly, obviously there is a loss of confidence.

‘The coach must always keep a good balance in that sense, lifting the confidence levels particularly when things don’t seem to be working. It’s a little of this that Mourinho paid for, the fact that the team had not started like last year, when they had a tremendous desire to do well after a bad year.

‘This year it was exactly the opposite, he paid for the lack of motivation among the players.’

Musonda gets away from Manchester City's Rodney Kongolo during an Under 21 clash in late October

Musonda is hopeful of breaking into Chelsea's first-team but he could also be sent out on loan in January

Musonda is chased down by Manchester United's Guillermo Varela during an Under 21 game in May 2014

Chelsea and Vitesse Arnhem have been cleared of having an improper relationship, the Dutch football association confirmed yesterday.

The independent investigation established no wrongful influence by Chelsea over the Dutch club, to whom they have been regularly loaning players over the past five years. The Dutch FA had ordered an investigation into the ownership and structure of the club following allegations by former owner Merab Jordania that Chelsea heavily influenced policy at the club.

Chelsea keeper Jamal Blackman is training with Belgian club Standard Liege ahead of a possible loan move in January. The 22-year-old’s chances of first-team football at Stamford Bridge are virtually non-existent now that Thibaut Courtois has returned from injury.

With Asmir Begovic and Marco Amelia also in the first-team squad, Chelsea are happy for Blackman to try his hand with Standard, who are eighth in the Belgian league.

Blackman, 22, is yet to make his senior debut for Chelsea but made one senior appearance on loan at Middlesbrough last season.

Hiddink meets his Chelsea players after Saturday's 3-1 victory against Sunderland at Stamford Bridge