Samuel Colin Walker (born 2 October 1991) is an English professional footballer who plays as a goalkeeper for Kilmarnock.
Walker progressed through the youth ranks at Millwall and Chelsea, although he failed to make an appearance for either club. He was loaned from Chelsea to Barnet, Northampton Town, Yeovil Town, Bristol Rovers and Colchester United on two occasions. He made his move to Colchester permanent in January 2014. He made over 200 appearances in total for Colchester.
Paris Saint Germain 
Borussia Dortmund 
Real Madrid 
Bayern Munich 
Club Brugge 
Fiorentina 
Atalanta 
Marseille 
Bayer Leverkusen 
Roma 
Catanzaro 
Sampdoria 
Concarneau 
Bordeaux 
Frosinone 
Inter 
Fulham 
Manchester City 
Celtic 
Rangers 
Borussia Monchengladbach 
Eintracht Frankfurt 
RB Leipzig 
Werder Bremen 
Spartak Moscow 
Krasnodar 
Everton 
Sheffield Utd 
Tottenham 
Burnley 
Villarreal 
Sevilla 
Shakhtar Donetsk 
Dynamo Kyiv 
Zenit Saint Petersburg 
CSKA Moscow 
Napoli 
Bologna 
Nottingham Forest 
Chelsea 
FSV Mainz 05 
Granada CF 
Valladolid 
Espanyol 
AC Milan 
Cagliari 
Lazio 
Empoli 
Orenburg 
Lokomotiv Moscow 
Ajax 
Almere City FC 
Fortuna Sittard 
PSV 
Go Ahead Eagles 
AZ Alkmaar 
NEC Nijmegen 
Feyenoord