Claude Puel has asked Southampton to regain focus after they lost 1-0 to Sparta Prague in the Europa league on Thursday.
Southampton had possession, but failed to penetrate, with Sparta’s left-back Costa Nhamoinesu’s volley proving to be the winner.
Southampton will have to either beat Hapoel Be’er Sheva or draw 0-0 in their final game at St Mary’s in a fortnight to go through and Puel said his team have to maintain their focus.
“It’s a bad result,” Puel said. “We made a good start in the game, but then from the first free-kick we had a goal against us and this is hard to accept.
“I think we played a good first half without a clinical edge, but after we lost the structure in the second half to keep our calm.
“It was a good position for the other team, because they made it difficult for us to find solutions on a bad pitch, but that is not an excuse. It was not enough to win this game.”
Southampton are winless in three games, scoring just once in that run, and Puel called for a renewed effort from his side ahead of Sunday’s Premier League game at home to Everton.
“Now it’s important to keep our concentration,” Puel said. “We know at the beginning of the night a draw was not sufficient.
“Now it’s a final game in front of our fans. We have to play a very good game for the next game at home to make sure we qualify, for the players and fans.
“Of course tonight it is disappointing. We now have to keep a good spirit for Everton on Sunday.”