LONDON (AP) - Liverpool might need to play a 35-year-old free agent in goal against Southampton in the Premier League on Saturday (Aug 17) after backup goalkeeper Adrian hurt his ankle in a freak incident during the team's post-match celebrations after their Uefa Super Cup win on Wednesday.

Liverpool manager Jurgen Klopp said a supporter ran onto the field, headed toward the celebrating players, slipped and ended up kicking the ankle of Adrian - the Spanish goalkeeper who saved what proved to be the deciding penalty in the shoot-out against Chelsea. Klopp said Adrian's ankle is swollen.

With first-choice goalkeeper Alisson Becker out because of a calf injury suffered in Liverpool's 4-1 win over Norwich on the opening day of the Premier League season, Klopp is facing something of a crisis.

Andy Lonergan, who was recently released by second-tier Middlesbrough and was on emergency loan at third-tier Rochdale last season, was part of the Liverpool squad during preseason - he played one half of a game - and is still training with the club. He is set to sign for the Reds on a short-term deal.

If Adrian doesn't recover, Lonergan will be starting at St. Mary's Stadium.

"There is no doubt how much we love our fans but if they could all stop doing that," Klopp said of the fan who ran onto the field.

"That's the worst example I have so far heard about... It's not funny, what can I say? I like the fact we don't have fences in the stadium but it means the supporters have a lot of responsibility. It's crazy. You think, 'Wow, how can this thing happen?'"

Irish youngster Caoimhin Kelleher is next in line for Liverpool in the goalkeeping ranks but Klopp said he is "not 100 per cent" either.

Adrian was brought in late in the off-season following Simon Mignolet's departure for Club Brugge in Belgium.