Leeds United owner Andrea Radrizzani reignited the "spygate" row with Derby County on Tuesday by suggesting the Rams should have faced sanctions for selling their ground to their owner.

Derby reported a pre-tax profit of £14.6 million after selling their Pride Park stadium to owner Mel Morris for £80m. The club then leased back the ground, which was independently valued but on the club's books as an asset worth £41m, from a company owned by Morris.

Tensions between the two clubs have simmered for months after a Leeds official was caught spying on their opponents during a training session. Last week Derby dramatically beat United in the Championship play-off semi-final decider and some players celebrated by using pretend binoculars, mimicking a spying gesture.

Speaking at the FT Business in Football summit, Radrizzani suggested their rivals should have been sanctioned for financial fair play breaches.

"The rules should be revised if clubs allowed to sell stadium to sister companies," he said. "We should revisit those rules. We were judged as a cheating club when we sent a scout to watch training so they should take a similar view on what I would say is greater cheating, by these clubs. I wish that the execs in FA/EFL can shake this system to find a way to make the rules clear and the same for everyone."