John Collins today backed Leigh Griffiths to kick on and continue his amazing scoring form for Celtic next season.

The striker's landmark goal was the only bright spot on a disappointing night for Celtic as the Ladbrokes Premiership champions crashed 2-1 to St Johnstone.

But Parkhead No.2 Collins, who will leave Celtic along with manager Ronny Deila at the end of the season, is certain Griffiths will be as deadly in front of goal next term

He said: "You have to say 40 goals is a very high standard, not too many strikers score 40 goals.

"He should be proud of it and you could tell he enjoyed it.

"That is him finished for the season, he misses the game at the weekend but he will be back next season terrorising Scottish defenders no doubt."

Saints boss Tommy Wright was delighted with the win and is looking for his side to make it five post-split wins out of five against Hearts at the weekend.

He said: "It is a great run of form, four wins, against Aberdeen and particularly tonight, but the two away wins as well.

"The players will have one more game and earn a proper rest and look forward to next season.

"We will see what happens in Sunday but if we play the way we have done we will have every opportunity of getting five out of five."