I also answered receiver swaption, 25000. Had to work out his position and exposure.
I think it’s buy payer. It was phrased to hedge his downside and participate in a rate increase. This can only be buy payer. If rates drop he will not exercise and he will have paid a fixed rate he is comfortable with. If rates go up he will exercise and participate in the rate increase. If he wanted to profit from a rate decrease he wouldn’t have entered into a hedge in the first place in my view. …and yes this is probably a moot point.