 After that, it looked like the club was comfortable in mid-table, however with not much impact in the attacking point of view, the club struggled and Ki could not prevent them from Premier League relegation which was confirmed on the final day.After the relegation, Ki announced his departure shortly after the season finished.On 29 June 2018, Ki signed a two-year deal with Newcastle United after the expiration of his Swansea City contract, thus reuniting with former midfield partner Jonjo Shelvey.