Rangers manager Mark Warburton has told The Scottish Sun that he thinks Celtic boss Ronny Deila was 'disrespectful' with his comments about pitches in Scotland.
There's an ongoing debate over the quality and style of pitch in Scotland, given that some teams have been using artificial pitches throughout the season.
Rangers striker Martyn Waghorn recently suffered a major knee injury in a Scottish Cup tie against Kilmarnock last week, with Rugby Park also using a plastic surface.
The injury has again stoked the debate over pitches, and Celtic manager Ronny Deila is quoted by The Scottish Sun as saying; "The view that senior players should only play on grass is very old-fashioned, in my opinion."
Those comments have angered some, and Mark Warburton - the manager of Old Firm rivals Rangers - has had his say having seen his top goalscorer Waghorn suffer his knee injury.
Warburton has told The Scottish Sun that he thinks Deila has been 'disrespectful' to managers of the opposing opinion, suggesting that everybody is entitled to their own view without being called 'old-fashioned'.
Warburton does however believe that plastic pitches are 'second best' to quality grass surfaces, as the debate rages on in Scotland.
"If Ronny did say that then I think that's disrespectful because you are entitled to your own opinion," said Warburton. "I think the one line for me that jumped out from that interview is number one, there's a good grass pitch and number two there's a good artificial pitch."
"If you're happy to accept second best then go for the artificial pitch, if you want to set the higher standards then you go for the best quality of grass pitch. That for me was the one sentence that summed it up," he added.
Who do you think is right; Deila or Warburton?