Rodgers admits Cole's career at Anfield just never got going.
"It was difficult for Joe here because he was littered with injuries," Rodgers said.
"The way things went for him in his first game - getting sent off - was a signal of how things were going to go for him here.
"He's a good player but at this stage of his career he wanted to go and play regularly. West Ham was maybe his best opportunity to do that."
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