The ECB have warned the 18 first-class counties that Kolpak cricketers will no longer be eligible to play here domestically beyond the end of the 2020 season if the UK completes a no-deal Brexit this year.
The governing body have circulated an email listing likely scenarios for players currently qualified to participate here as locals by virtue of a Kolpak registration or the holding of an EU passport.
In the event of a no-deal Brexit on October 31 or the following two months, the ECB have been advised that new applications for the registration of Kolpak/EU cricketers would become void with immediate effect.
Players already contracted here would be permitted to continue under their existing terms for 2020 provided they remain at their current clubs. That grace period would end on December 31 next year.