After being released by Blackpool, Euell made a surprise addition to the Charlton squad for their friendly against Woking after handed a 20-minute run-out as a substitute which the result was 0–0. Then, Euell began training with former club Charlton Athletic with a view to a move back to The Valley, on 10 August 2011 he rejoined Charlton on a one-year deal having impressed while on trial. After joining, Euell told the club's official website: ""It feels good to be back and I'm happy that Chris Powell and the club have allowed me to come back to train and get fit. It felt good to pull the Charlton shirt back on and to just play some football again."" Euell also stated he has made him more determined to succeed the 2011/12 season since being a free agent.