According to a report in the Telegraph, the ECB has decided to ban players from featuring in the Pakistan Super League, as well as other T20 leagues that clash with their domestic season.
The ECB will make an exception for the Indian Premier League, which enjoys a two-and-a-half month window in the ICC Future Tours Programme (FTP).
Barring the IPL, no-objection certificates (NOCs) won't be handed to T20 leagues that run alongside the English domestic season. Consequently, the PSL, which is scheduled to be played in April-May, is part of the list that would bear the brunt.
There's been no official announcement from the ECB yet. According to the Telegraph, the move is to be ratified by the board next week.
The policy, according to the report, is to "safeguard the quality of the domestic game", even if the immediate concern could be losing homegrown players to lucrative leagues abroad.
