Barcelona striker Luis Suarez has questioned how Steven Gerrard will be replaced at Liverpool.
Suarez spent three years on Merseyside before making a £75million move to La Liga last summer.
"There are a small number of players in the world that are irreplaceable, and Steven is one of them," Suarez told the Mirror.
"Not just irreplaceable as a player, but also as a captain, and what he represents for Liverpool.
"Liverpool are a great team though, big players will want to play for them. They have great midfield players already there who can make a step up - and I am sure the boss is already thinking about replacements."