Cristiano Ronaldo and Harry Maguire appear to be at loggerheads as Manchester United's internal issues continue.
The pair are supposed to be on the same side at Old Trafford, but tension is building amid a captaincy row.
Mirror Sport reported that there have been discussions about Maguire relinquishing the armband whilst he battles poor form.
But the centre-half is concerned that giving it up would see him lose it permanently as Ronaldo's influence continues to grow.
Teammates not seeing eye-to-eye is by no means a new thing in the world of football, but is far from the most helpful thing for a manager.
Ralf Rangnick, whose future beyond this season is unclear, is having to deal with the dressing room politics as Maguire increasingly feels as if his authority is being undermined.
United have had players who didn't get on, not that it stopped them being a success on the pitch.
We take a look at several teammate dynamics that resulted in frosty relationships.
Who should be Man Utd's captain? Have your say in the comments!
Andy Cole and Teddy Sheringham
The pair were part of United's strike force during their most successful season back in 1999.
Their strike rate when playing as a duo was hugely impressive, which came despite their dislike for each other.
Cole has claimed that the friction began as he prepared to make his debut for England against Uruguay.
He was waiting to come on and replace Sheringham and expected a warm reception from his compatriot, but he got quite the opposite as he was snubbed.
Cole has said since: “I wouldn't ever cast aspersions on Sheringham's talent as a top-rate footballer for his clubs and country. I've just loathed him personally for 15 years.”
William Gallas and Kolo Toure
The pair played at the heart of the Arsenal defence, but that didn't mean they had a close bond.
Arsene Wenger needed them to strike up a partnership if his Gunners side were to be successful.
But Gallas never spoke to the Ivorian after being stripped of the captaincy after a famous draw at Birmingham City.
The Frenchman sat on the pitch after the game, clearly frustrated at the decisions that had gone against his side.
Toure are opened up on the dynamics, saying: “Our relationship has improved, but it’s just a professional relationship. Once we are on the pitch, we try to keep a professional attitude and to communicate.”
El Hadji Diouf and Jamie Carragher
Liverpool signed Diouf in 2002 as they look to bolster their squad ahead of a title charge.
The Senegalese star did little to further their ambitions however and he certainly angered his homegrown teammate.
Carragher, determined to deliver a Premier League to Anfield, had issues with Diouf and his attitude.
He has previously been quizzed on his worst teammate and didn't hesitate when it came to his answer.
He said: "The worst has to be El Hadji Diouf, actually, I quite enjoyed playing against him as you could kick him then – can’t kick your own players."
Emmanuel Frimpong and Samir Nasri
The feud between the Arsenal pair started when Nasri lamented his frustrations as Frimpong was sent-off against Liverpool.
Frimpong claims Nasri threatened him on a phone call and has underlined the depth of his dislike for his former teammate.
“For me, the truth is I’ve never liked Nasri and I will never, ever like this guy," the Ghanaian said. "Even if he gives me five billion dollars, I will still not like him.”
The feud between the ex-Arsenal pair began in 2011 when Nasri took aim at Frimpong after he was sent off in a 2-0 defeat to Liverpool."
He also added: “I don’t respect him and I will never respect him as a professional player.”
Jens Lehmann and Manuel Almunia
Arsenal were certainly not without their internal issues.
Their goalkeeping situation led to issues between Lehmann and his teammate, who began pushing him for the No 1 spot.
Eventually Wenger opted to swap the pair which the German, who had been part of the Invincibles side, found hard to take according to Almunia.
He told the The Athletic : “The problems came when I was very excited and very fit, training well with so much energy and at that same time [Lehmann] wasn’t having his best time at Arsenal, so when Arsene Wenger decided to change the no.1… he’s a winner and he took it very badly, which is normal.
“He’s a national-team goalkeeper, big name, and I’m a small goalkeeper from Spain who comes along and makes it difficult for him - he’s thinking, ‘What the hell? This is not possible?’ So yes, we had difficult moments.”
