I don't speak Arabic and I don't trust google translate to get nuance, so I'm going to copy and paste a comment from a different forum I frequent:

"the entire thing is a joke. Al Watan never reported anything. Any person who properly reads Arabic knows that the tweet itself started with “news reports:” and that it indicates the tweet was aggregating, similar to the bbc rumors page or a filler article that says “reports in Spain suggest…” with no info claimed of its own.

the editor was retweeting fake Fabrizio Romano accounts. He was simply fooled into thinking there’s were substantive reports elsewhere that the deal was done, and made a tweet indicating that “News reports:”The paper has tweeted 3-4 times in the past few months doing the same aggregating on Guardian articles, and even the Sun staying sheikh Jassim would buy West Ham if he failed at United.

It is a joke that it even made it to the stage where questions were being asked and so many misled, there never was a claim that it was done by the Qatari paper, period. "