The official site has confirmed that the club will play Spanish side Almeria at the Liberty Stadium
The match will kick-off at 3pm, Saturday August the 1st, with tickets costing £10 for adults and £5 for concessions.
Hugo Sanchez's men finished 11th in La Liga last season, and will provide a stern test for new boss Paulo Sousa, one week prior to the opening Championship fixture against Leicester.
Meanwhile, tickets are still on sale for the FC Twente match tomorrow until 6pm tonight and before the match tomorrow.