The 19-year-old Gunners left-back has been carrying out some promotional work with Puma over the past week.
Bellerin was one of the big plus points for Arsene Wenger last season after he broke into the first-team and made the right-back spot his own.
And the Spain Under-21 international is eagerly anticipating a return to training with the FA Cup winners.
Bellerin posted the above snap on Instagram and wrote: “Back home to London. Pre-season starts this week!”
Bellerin capped an impressive run of form in the Gunners side with his first Premier League goal against Aston Villa in February before he netted against Liverpool in a 4-1 win at The Emirates in April.
The Gunners youngster has scored two goals in 28 appearances in all competitions for the north London side.
The Spain Under-21 international joined Arsenal from La Liga giants Barcelona in 2011.
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