The Argentine keeper returns to a club where he was once registered but never played, this time as backup to Gianluigi Donnarumma. Rulli signed for City back in July 2016 for £4 million. Why City needs a goalkeeper (again)The move is directly tied to the departure of James Trafford, who is heading to Leeds United in a deal worth £40 million, roughly $53 million. The club netted £40 million from the Trafford sale, meaning the Rulli purchase is being funded by roughly 5% of the incoming Trafford fee. For Marseille, losing Rulli at a loss is a measurable setback.