Premier League clubs are fearful that their rivals may lie about their coronavirus testing amid Project Restart as the top flight issues a stern warning that heavy sanctions will be imposed for Covid-19 rule breaches.
On Monday, all 20 clubs are expected to approve the first step of the return to training, meaning players will be able to work in small groups while ensuring they are maintaining social distancing.
It is the first of a three-stage procedure that it is hoped will lead to the resumption of the 2019-20 season, which came to a halt in mid-March.