Liverpool hero John Aldridge says a lack of action in the transfer market has been key to the team's struggles this season.
Writing in the Sunday World, Adridge said: "The demise of this great team has baffled all of us this season, but I have come to the conclusion that last season's exploits are at the heart of their problems.
"(Jurgen) Klopp needs his team to play with a high tempo and to run through walls for him, but that takes its toll on players.
"Having played every game possible last season and come so close to a quadruple, the kick-back appears to be a team that has run out of gas. Alex Ferguson used to change his team consistently during his successful reign as Manchester United manager.
"He did that even when they were winning trophies, but Klopp has struggled to refresh his team after all the success of recent years. He knows that a pretty radical rebuild is needed this summer, but that prospect is on hold for the next few months."