Phil Thompson is concerned about Liverpool's vulnerability at set plays ahead of Saturday's Premier League clash with Arsenal.
The Reds welcome the Gunners to Anfield in hope of bouncing back from the defeat to West Ham before the international break.
West Ham's opening goal at the London stadium came after Alisson missed the ball at a corner. The Brazilian felt he had been impeded in the build-up, but the goal stood after a lengthy VAR check.
Ex-Liverpool defender Thompson says Arsenal could exploit that weakness if they have been 'doing their homework'.
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He told Off The Ball [via Inside Futbol ]: “Without being a tactical genius, I think the set plays obviously are a bit of a worry.
"The way people [Michail Antonio for West Ham and Ashley Barnes of Burnley] surround [Alisson and put pressure on him].
“I think that [set-pieces] is the area where you would be sort of concerned.
“And my goodness, dare I say if Arsenal have been doing their homework, they would do exactly the same and surround Alisson tomorrow.”
Liverpool currently sit fourth in the league table, just two points clear of Arsenal in fifth.
Defeat at Anfield on Saturday would see the Gunners leapfrog Jurgen Klopp's side in the standings and knock them out of the Champions League places.
