We don't know. It's likely they have less freedom than supporters.

https://www.nytimes.com/athletic/6575747/2025/08/26/premier-...

>“The Premier League is clear on guidance to all its clubs in that flags, banners or other materials (including replica shirts and t-shirts) that display potential inflammatory content, which could include flags of countries in conflict, or content considered discriminatory, offensive or politically motivated, should not be permitted.

> The club also say: “In line with Premier League guidance, supporters are advised that Israeli or Palestinian flags, banners, t-shirts or materials will not be permitted to be displayed at fixtures for the foreseeable future.”

I couldn't find any of this on the Premier League website - it's all done by proxy (the clubs).