CELTIC winger Scott Sinclair was involved in an 'astonishing' bust-up with a Fir Park groundsman after his side's 5-2 win over Motherwell, according to reports.

Former Rangers striker Gordon Dalziel told Clyde Superscoreboard: “I’ve never witnessed anything like that.

“The two guys were ready to go for each other.

READ MORE: Motherwell 2 Celtic 5: Parkhead side racking up record numbers with Lanarkshire romp

“Scott Sinclair wouldn’t let it go - I’m not sure what’s upset him.”

The groundsman was apparently upset with Sinclair after he did something to the pitch as he walked off at full-time.