The video footage that was revealed by SkySports shows Pogba going past Mourinho and shaking hands with assistant manager Michael Carrick and United press officer John Allen before giving Mourinho what looked like an evil look.
Mourinho is seen mumbling something as goes past the French midfielder, who also says something in response.
The other players look on as an exchange of words continues between the two.
It has since emerged that an Instagram story posted by Pogba during United’s shock exit to Derby County in the League Cup was what irked Mourinho.
The Instagram post showed Pogba and team-mate Andres Pereira laughing in the stands at Old Trafford on Tuesday night.
Mourinho was reportedly furious about the laughing post which is what he confronted Pogba about.
WATCH: Mourinho and Pogba’s in tense-looking exchange
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