The financial implications are huge for the PL if they lose. The legal costs alone will run into upper tens of millions. They are simultaneously fighting legal battles with City, Everton, Forest and soon Chelsea. From a logisitical point of view this is a nightmare for officials at the PL. There are many millions of documents involved in the City case alone. They have less than 200 employees on their staff.
This is a huge reputational risk for all senior people at the PL, all their Board Directors, all their partners and sponsors. Masters has no significant experience of working at this level in this sort of geopolitical environment. This is the biggest shit-show English football has ever seen...and it's all self-inflicted.