Carroll came up through the youth ranks at Newcastle United but struggled in the Premier League over a handful of appearances, before taking the Championship by storm to help them seal promotion back to the top flight.
The striker, now playing for West Ham and looking to get back on track after injury troubles, scored 11 goals in the first half of the 2010/11 season for the Magpies, before sealing a £35 million move to Liverpool.
He scored just 11 goals for the Reds before leaving in 2012 for the Hammers, and Carroll has now rated his entire career at just six out of 10.
The 28-year-old told the Daily Mail: “Six – Newcastle, yeah good. Liverpool: never really happened. Here? In spells, yes. Not really done what I know I can do and believe I will do.
“There’s a lot more. Yes, I’ll give myself six. Nine caps for England, there are more caps in me. I’ve always thought I could play for England if I am on my game — if I am fit.”
Since joining West Ham in 2012 – initially on a season-long loan deal – Carroll has scored just 28 goals in 91 Premier League appearances.
He’s been plagued with injuries since moving to east London, with 27 appearances in the top flight the most he’s made in a single season.