Lord Owen has had business dealings with Moshiri since 1995 when the company that Owen was then Chairman of, Middlesex Holdings, helped a company called OEMK (whose MD was Moshiri) with global sales of Aluminium.
As @Moomin stated, Owen is in late 70's and has never expressed any interest in football. His resignation of directorships in December cannot be related to Moshiri's deal with Everton as that was nowhere near certain at the time.
Whilst it's interesting he was there, it's no more significant than one old friend supporting another in my opinion.
Perfect politician, calls himself a social-democrat - works with oligarchs to gut Russia and steal wealth from the people.