Celtic manager Ronny Deila believes Leigh Griffiths could one day become a club legend after reaching the landmark of 50 goals for the Hoops.

The striker's double in the Friday night win over Dundee United took him to a half-century of goals from just 60 starts.

Griffiths has now reached the 50-goals mark quicker than the likes of Henrik Larsson and John Hartson, and Deila believes he can emulate such players.

"It is a very good performance to get to 50 so early," he said. "I am delighted with the way he plays.

"He has a five-year deal here so there is a good chance if he keeps scoring like this, that he can be a legend.

"When you say those names and say he has scored more goals than them in the same period then he has a big opportunity to really make a mark in Celtic's history."

Griffith was booked by referee Bobby Madden for taking his top off after scoring his first goal to reveal a t-shirt with the number 50 emblazoned on the front but he claimed it was "a million per cent" worth it.

He said: "It was an added incentive to go and get that goal and I knew when the chance came as long as I put it on target I would score.

"I texted Stevie (kit man) this morning to get a t-shirt made up for me and Broony (Scott Brown, injured skipper) said I should have had 51 under it. Two t-shirts, but I might have looked a little bit chunky.

"To get 50 goals for any club is a special achievement but to get 50 at a massive club like this is a joy.

"But I can't score goals without my team-mates and the most important thing was three points."