Mourinho dismissed interest from Galatasaray in the summer, suggesting it would be easier for them to hire him as manager than to buy Fellaini.
The move reaped instant rewards as the Belgian midfielder has been on of United's star performers of 2017-18 so far.
Speaking to turkish-football.com, club official Metin Albayrak stated that the 29-year-old is on their radar, with the Black Eagles eyeing a combative central midfielder to add to their ranks with the Turkish side flying high both domestically and in European competition.
"Fellaini is on our list, we have made efforts to sign him but not just him".
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There was a lot of hard blows to this group. "Until the last day of the summer tour, we talked and we did not know anything". But the five-time Ballon d'Or victor is still revered in his homeland.
"Reports in England claim we are interested in Fellaini because his brother has come to watch a couple of our games but I must be honest and say there is nothing concrete", he said.
"We are keeping tabs on several players".
Fellaini recently missed six games for United after limping out of his country's World Cup qualifying against Bosnia and Herzegovina in October.
Fellaini is asking for £2.1 million in damages, as his lawyers claim that the New Balance boots he wore as part of his endorsement deal caused him "loss of enjoyment, inconvenience and impact on performance".
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Addressing the North Korea crisis, the US President tweeted: "NoKo has interpreted America's past restraint as weakness". Speaking in Tokyo on Monday, Trump renewed his warning that the "era of strategic patience" with North Korea was over.
"We want to make the signing for the winter transfer window or for the end of the season".
Fellaini can talk to foreign clubs from 1st January with the very real prospect of the Belgian leaving Old Trafford on a Bosman next summer.
However, Fellaini was spotted in Turkey last week, as a host of Super Lig clubs step up their pursuit.
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The prince was an ally of Rupert Murdoch and could usually be counted on to vote his shares in unison with the company's founder. The film business also continued to be hard for 21st Century Fox, which has struggled while relying on aging franchises.