So, FIL lives alone and we see him regularly as he lives only a short drive away. Every so often he has an old work colleague over for the weekend (they worked together for years and are close friends but colleague lives an hour away).
Anyway last time this guy was visiting, FIL turned up to visit with him in tow. We made them welcome but were a bit taken aback as we don't know this bloke at all. Anyway he's here again for the weekend and FIL announced in the week that they "will pop round" to see us again as it kept his mate occupied. We didn't say yes or no, just that we would let him know if we were free (as it happens we aren't) but is it mean not to want him bringing his pal round? Nothing against him but he's not our friend to entertain!