Taking a guess here .. but I am sure work permit is not a deterrent in signing this lad. He had his trial with us this season and just before the Jan window. People thought "we have to buy him now or never"... I think Soriano and Txiki want to buy him and see him as not just a top young talent to play for us, but financially sensible with lower wages and marketing potential in the ME which will boost citys exposure, popularity geographically and overseas revenues.
I think City are working right now on bringing Omar in and probably assessing routes i.e. visas, marketing planning etc... this is not an overnight thing people expect it to be. Outside of EU it can take a while, especially from ME & Asia, to get a work permit sorted and "special talent" doesn't grant you an overnight work permit.
With Omar's UAE links, youth & rising stardom, I think city have already nailed him and agreed with his club Al Ain (why else call him for 2 week trial if work permit was an issue?) and he will stay quiet about it to the press and refuse all other clubs to "discuss" his future.