Sam Walker joined Chelsea from Millwall's youth team in 2007
for a fee of around £175,000. He is described as a "good
shot stopper who collects crosses and distibutes well".
Sam joined Norwich on loan in March 2009 playing for the Under-19s
in their 1-0 defeat at Reading on 21st March 2009 after Jed
Steer was called up by England and Declan
Rudd and Sam Grieverson both
sidelined through injury
Walker was part of the Chelsea youth team that won the 2010 FA
Youth Cup defeating Aston Villa in the final
On 24th March 2011, Sam joined Barnet on loan until the end of
the season, becoming new manager Martin Allen's first signing.
He made 7 appearances for Barnet
In July 2011, he joined Northampton on a season long loan but
returned to Chelsea on 23rd December 2011, after making 21 league
appearances, when the new Cobblers boss Aidy
Boothroyd signed Shane Higgs as first choice keeper.
Walker joined Yeovil on loan on 19th January 2012. He made 20
appearances for Yeovil.
On 14th August 2012, Walker was loaned to Bristol Rovers until
2nd January 2013. He made 11 league appearances for Rovers.
On 14th January 2012, Walker joined Colchester on loan until
27 April 2013. 21-year-old was influential in the U's League One
survival bid last season, keeping seven clean sheets from his
17-game loan spell. He rejoined Colchester on loan on 19th July
2013, until 19th January 2013. He played 26 times for the U's
during the loan spell, keeping seven clean sheets
On 20th January 2013, Walker signed for Colchester on an 18 month
contract. "He is another young and hungry footballer who
has decided to come here and play, which is great testament to
what we are doing here at Colchester." said boss Joe
After his contract with Colchester expired in the summer of 2018, he signed a three year deal with Reading on 25th July 2018., reuniting with Reading manager Paul Clement whom he worked with at Chelsea's youth team. He had made 213 appearances for Colchester.