Unless the king is equivalent to the goalie in this situation in which case it would be offside

In football you are offside if you don’t have at least two players ahead of you (usually, but not necessarily the keeper and one defender)

A player is in an offside position if:

• any part of the head, body or feet is in the opponents’ half (excluding the halfway line) and

• any part of the head, body or feet is nearer to the opponents’ goal line than both the ball and the second-last opponent