Besides Hales, the Barbados team has recruited Nepal's 18-year-old leggie Sandeep Lamichhane.
Alex Hales usage of recreational drug forced the English board to bar him to give World Cup ticket.
Alex Hales has been added to the Nottinghamshire's squad for the game against Durham.
"He did not adhere to the things we have worked."
The hard-hitting batsman is currently on a white-ball-only contract at Nottinghamshire after making himself unavailable for four-day cricket last season.
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Hales for failing the drug test was initially suspended for 21 days and eventually withdrawn from all England teams.
Hales' name was earlier withdrawn from all the squads by ECB.
These players have been constantly performing and it is time that they are rewarded with a World Cup spot.
He will not play against Ireland and Pakistan as well.