The former Celtic wideman featured 22 times for the Black Cats during a half-season loan spell last term, scoring twice.
He returned to Parkhead for pre-season but struggled for opportunities, before sealing a move to David Beckham-backed MLS expansion side Inter Miami in January.
And Morgan has now revealed that he had the option to return to the English pyramid during the current campaign – but had his eyes set on a move to Miami.
Newcastle United consider loan for £58m 'captain' as Chelsea trio remain on Eddie Howe's radar
Goncalo Ramos' 14-word response to Newcastle United transfer interest following ‘bid’ reports
Newcastle United transfer news: Chelsea ‘considering second bid’ for Newcastle target, Southampton forward ‘top’ of Everton wanted list
Sergio Aguero backs 'difficult' Newcastle United, Aston Villa and Brighton to ‘fight’ for Europe
New £26m signing that Newcastle United bid for suffers major injury blow against Everton
“I had a few clubs in the Championship (with offers)," Morgan said, speaking to the MLS’ official website.
"But to be honest, once I heard of the interest here and how keen the club were to get me, that kind of made my mind up.”
Morgan featured just twice for his new side before the MLS season was suspended, but he hasn’t been using the free time afforded by the pause in fixtures to watch the second season of ‘Sunderland ‘Til I Die’ – in which he featured.
“It was a little weird," said the wideman of the presence of the cameras.
"I think they reigned it in a little from the year before; they said the Netflix crew had very much full access before I was there. I think they kind of restricted that a little more, but the cameras were there all the time.
“Eventually you get used to it and you don’t notice them, but to get used to it was a little bit different.”
The 23-year-old only has positive things to say about his brief spell on Wearside, though.
“I’ve only got fond memories from being there," Morgan added.
"It's a massive club. When I was down there I was trying to concentrate on the football side of things and we didn’t achieve the goals we wanted to, which obviously wasn’t great.
“I’m hoping they can get back to where they belong."