A fire at Institute Football Club is being treated as arson.
The blaze at the Riverside Stadium at Drumahoe, near Derry, is believed to have involved an oil tank.
The fire, which burned for around two hours, was eventually put out by a 15 firefighters using three appliances.
The fire service, who are treating the blaze as deliberate, has said it was in a disused changing room.
The club's chairman, Bill Anderson, said: "Obviously, I do feel that sense of sadness and I know that people have a big connection with the grounds, our supporters and everybody associated with the club, will be very sad.
"I'm angry - maybe a little bit - but feel sadness obviously.
“None of that infrastructure as far as the changing rooms and that are concerned, will be any use to us now because it's completely destroyed.
"But I think that for us, it's another indication of the need to move forward as quickly as we can,” he told the BBC.
Police have said they are investigating the blaze.
The fire is the second setback to hit the club in less than a year after severe flooding last August forced the closure of its grounds.
The club is planning to play its home games at the Brandywell Stadium, home of Derry City FC, next season.
