麻豆约拍

Sunderland manager Simon Grayson discusses midfielder Darron Gibson's criticism of his team-mates.

A video appeared on social media of Gibson after Saturday's 5-0 friendly defeat by Celtic, in which claimed some team-mates did not care about playing for the club.

Grayson told 5 live Sport that Gibson had apologised for his comments.

However, Grayson warned players to be more careful when out socialising.

"Social media plays a massive part in football. People are there to wind people up and sort of make you say things that you should not say," he said.

This clip is taken from 5 live Sport on Tuesday 1st August, 2017.