Nope, that was never really on the table. People were dreaming up scenarios where Qatar would pump in money.
Under the current PSR rules, clubs in the Premier League are only allowed to spend 70% of their revenue on player purchases/salaries. (Investment doesn't count as revenue.)
And clubs are allowed to lose £15 mill across 3 years, or up to £105m if that £90m is covered by the owners injecting their own funds by subscribing to new shares (as Ratcliffe is already doing. He's maxing out the investment that can benefit the club under PSR rules).
What some people hoped was that Qatar would bring inflated "fake" sponsorship deals to the club, that would be counted as revenue. Like what City has allegedly done. But until we see the results of their court case it would be dumb to try to do this now. We're too late to cheat. Besides these sponsorships would still have to be considered near market rate to be approved to count for PSR, and considering we already have some of the best sponsorship deals in the market as one of the most popular clubs in the world, we couldn't just get a deal that pays double of what we get now and hope to get it approved. Was different for City who didn't have the biggest deals to start with, and through the new owners network they could get City bigger sponsorship deals before they would naturally be able to get them from becoming a bigger club delivering better results. It speeded up their rise from a mediocre club to a big one. We're already one of the biggest clubs, so we couldn't benefit much in short term no matter how rich our owners would be.
But if the club is run better, we don't overpay fees and salaries for squad players, we build a new stadium that would bring in higher revenues and so on. Then the club can spend more on future player purchases.