The 23-year-old joins the Championship side for the rest of the 2018/19 campaign, with Rovers having enjoyed an unbeaten start to the new campaign.



It is the second season in which the Saints Academy graduate, who has made 30 first-team appearances for the club, will have gained experience in the second tier, having enjoyed a successful spell with Norwich City last term.



Everyone at Southampton wishes Harrison well for the coming season, while the club will be keeping a close eye on his progress at Ewood Park.

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