Nemanja Vidic and Patrice Evra were defensive stalwarts in more than eight years together at Manchester United, winning five Premier League titles, along with the Champions League in 2008.
The Serbian and the Frenchman became the best of pals at Old Trafford, but not all was rosy between the pair, as Evra recounted a row between them that lasted for three months.
Some quotes from a Q&A session were published on the Manchester United website and make for fascinating reading.
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"We arrived at the same time and we struggled together. We were at the same hotel, I remember, and we were so bad at the beginning, me and him.
"The manager sent us to play with the reserves and the coach was Rene [Meulensteen]. After 45 minutes, he subbed us - in the reserves. In the dressing room, Vida was saying, 'My agent called me, I need to go back to Moscow.' Also, my agent called me and said they had [interest from] AS Roma. It was difficult here.
"So, we struggled together. It's why I have a lot of respect for Vida."
Evra then spoke in more detail about the row between himself and Vidic. It was unclear what sparked the disagreement or the exact timing of the feud, but Sir Alex Ferguson did ask Rio Ferdinand to play on the left side of central defence to keep the duo apart in a 1-0 win over Sunderland in November 2011.
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"We had a fight, me and him, and didn't speak for three months," he added.
"We played together and we didn't even say a word. I never told him to go left or go right. He was the same. Ferguson had to swap Rio Ferdinand to play on the left side with me.
"It was like that for three months until, after a game, I remember he came to me in the dressing room and gave me a high-five. Everyone was like 'finally' because we were best friends together, Vida and me. We have a deep story together.
"I love him so much. We struggled but we were really real, me and him. If we were doing something wrong, we'd argue but, in the same way, it was a really great relationship."
Evra and Vidic made almost 700 appearances between them at Manchester United, with the Frenchman featuring 379 times for the Red Devils, while the former Serbia international donned the famous shirt 300 times.
Topics: Manchester United, Nemanja Vidic, Sir Alex Ferguson, Patrice Evra, Rio Ferdinand