Harkes (27) notched four goals in 37 appearances last season as United secured a fourth placed Premiership finish and a spot in the Europa Conference League qualifiers.
The lure of European football with the Tangerines has proved too strong to walk away from – and Harkes will now be part of the first United squad to face continental opposition for 10 years.
Harkes has grown into a key player at Tannadice since arriving in January 2019 from MLS outfit DC United.
The American revealed upon signing that his Dundee-born grandfather was a boyhood United fan, instantly endearing himself to supporters.
In the years since, his growth on the park has ensured his position as a Tannadice fans’ favourite.
His continued presence with United will be a bonus for whoever is in charge of the first team next season, whether Rijeka target Tam Courts or a new face.
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EXCLUSIVE: Ian Harkes set to sign extended Dundee United deal
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