The news, or rather the hypothesis, comes from Baku, the capital of Azerbaijan, where a few days ago, the newspaper "Sabah" dedicated an article to the situation, stating that Santa Sofia could be used again as a place for Islamic worship, overturning the decision made by Turkey under Kemal Ataturk. The newspaper reported that there are building works underway to bring it about. Amongst the restoration work there are plans to construct a "mimbar", the pulpit or raised platform from which the Imam guides the prayer and gives the Friday sermon, the most important moment of prayer in the Muslim week. What could a mimbar be used for if not for the "active" Islamic use of the ex-cathedral?I have not been to Haghia Sophia in Istanbul since May, so these comments may be out of date, but ... Yes, there was some work going on, but it looked like normal restoration work. There is no need to construct a minbar, because there is already an Ottoman one in the building, from the centuries it was used as a mosque.
Haghia Sophia in Istanbul is a very popular tourist destination, whose tickets sales raise a huge amount in revenue - I find it as unlikely that it will be turned back into a mosque. Similarly, I'd bet money that the various Greek campaigns to turn it back into an Orthodox church will fail.
This nonsense of a story seems to have begun again because the church of Haghia Sophia in Iznik, ancient Nicea, is being used as a mosque following restoration (my 2007 photos here). Although the church is important in the history of Christianity, as this is where the first Ecumenical Council was held, I'm not sure what the big fuss is about - there are not enough Christians to justify using it as a church, nor enough tourists to keep it full-time as a museum. To continue to use it as a mosque, its use since the Ottoman conquest, makes sense and does not stop people from visiting it.