Manchester United (6th position) faces bottom-placed Hull City in a Premier League match at home on Wednesday night.
According to Ferdinand who spoke to BT Sports on Tuesday,
"I've just seen a video of the lads dancing in the changing room. I'm all for having a bit of fun on social media and stuff.
"But not when you're fifth [United are actually sixth] in the league, and you're not in the Champions League positions and you're fighting."