Celtic fullback Kieran Tierney criticised Motherwell's "lack of respect" after their part in a bizarre goal at Celtic Park yesterday afternoon.

The Fir Park side failed to throw the ball back to Celtic as the Parkhead side stopped the game for Ryan Christie to get off the pitch with a suspected hamstring pull.

Kristoffer Ajer put the ball out of play but Motherwell scored from the resulting throw-in after failing to give the ball back.

“The only time I’ve seen a goal like Motherwell’s was a clip on Facebook but they actually gave them a goal back because they didn’t mean it," said Tierney, who captained Celtic in the absence of Scott Brown.

“It’s mental. We actually suggested Motherwell give us a goal back because everyone thought it would happen and you would think someone in their team would have said ‘fair enough, give them a goal’.

“There was a bit of confusion and the way we centred the ball we had walked into their half as if to say ‘we’re going to score here’ but they started pressing so we had to try and keep the ball again.

“That’s just football, it’s fair play. Everyone respects everyone on the pitch but in that situation there was no respect.

“The right back Liam Grimshaw threw it over my head so I just turned round to pass it back to Scott Bain but the boy ran onto it and sprinted and shot.

"I actually spoke to Scott Bain after the game and he said he wasn’t sure if he was going to shoot or pass it back to him but he shot, Bainy saved it and they scored from the rebound.

“I’ve never seen it before but there was no respect. They went and celebrated and there’s nothing we could do but show a reaction.

“The first couple of minutes after it were a bit fesity but after that we got the ball down and scored two more goals and you can’t ask for more than us showing that character and mentality.

“The pressure was on us after conceding a goal like that because they knew it was in our heads so we showed the best reaction.

“I’ve never seen it happening in my life and it was such a surprise. Even in the biggest games, the fiercest games, there’s still that respect where you give the ball back if your opponent goes down.

“That’s how your brought up and taught and it wasn’t good to see. There’s been plenty of times where I’ve thrown the ball back to the goalkeeper or centre half.

“It was a surprise to us all but at the end of the day we won 4-1 and it’s a great result and three points for us and we’ve passed another mentality test.

“I hope it’s a freak incident and I hope he didn’t mean it but you never know. We contested every drop ball after that just in case something happened again and they didn’t give us it back."