Transfer fee £22m
Signed as the transfer window closed in January, Suárez has been Liverpool's most successful signing in the Henry era. He creates goals as well as scores them and starred in this summer's Copa América, where he was crucial to Uruguay's triumph Photograph: Andrew Powell/Liverpool FC via Getty Images
Transfer fee £35m
Carroll arrived on the same day as Suárez and his huge transfer fee was a club record for Liverpool. Carroll's Liverpool career has been disrupted by injury and he has yet to have the impact many had hoped Photograph: Clive Brunskill/Getty Images
Transfer fee £20m
Henderson arrived in June this year and some questioned whether a talented but unproven player justified such a high fee. Has struggled at times settling into a rejigged Liverpool midfield but is still only 21 and has time to develop Photograph: Clive Brunskill/Getty Images
Transfer fee £7.5m
One of the stars of Blackpool's brief stay in the Premier League last season, Liverpool tried to sign Adam in January 2011 before finally completing a deal in the summer transfer window. His partnership with Lucas means Liverpool lack pace in midfield and he was sent off against Spurs but he has been effective from set pieces Photograph: Phil Noble/Reuters
Transfer fee £6m
Had been one of Newcastle's best players for the past few years and has settled well into the Liverpool squad, linking up well with Downing. Is a relatively cheap signing compared to other arrivals in the Henry era Photograph: Andrew Powell/Liverpool FC via Getty Images
A regular All-Star selection, the Red Sox signed Crawford on a $140m seven-year contract in December last year. A brilliant outfielder, Crawford struggled at the start of his Red Sox career and his season's batting average of .255 was well below his career record of .293 Photograph: Jim McIsaac/Getty Images