Crystal Palace have denied any wrongdoing after being accused by Cardiff’s maverick chairman Vincent Tan of spying.
The Eagles beat Cardiff City 3-0 last weekend but Tan believes his club’s starting lineup was leaked before the match.
According to Cardiff, ex-employee and now Palace’s sporting Iain Moody got the team from staff at the Welsh club.
Mr Moody told The Sun the allegations were completely untrue.
Palace’s co-owner Steve Parish also denied the claims and said it all seemed very far-fetched.
The Premier League has confirmed it is investigating Tan's complaints but would not comment further.
Vincent Tan and Iain Moody are currently in a legal battle following Moody’s departure from the club.