Was rumoured a few weeks ago on Reddit/Twitter that FSG were negotiating with Nike about being kit supplier from 2018-2019 onwards when the NB deal finishes.
With them not having United anymore,Nike need a big team wearing their gear in the premier league especially after NBC have just extended the EPL deal in America and the EPL growing exposure over there.Chelsea and Arsenal have long term newly signed deals,Nike are not ready to throw big money at City with them not having a big following,makes sense they are seeking possibilities of a tie up.