Rayo Vallecano from La Liga will visit Hillsborough for a pre-season friendly on Wednesday, July 20, kick off 7pm.
The Spanish side were promoted to the top flight in the 2020-21 season and ticket prices for the game are £15 for adults, £10 for under -21s and over-65s and £5 for under-17s.
The following Saturday, July 23, sees Wednesday travel to Wigan for another friendly, kick off 3pm.
Meanwhile, defender Ciaran Brennan has joined League Two Swindon on a season-long loan.