Borussia Dortmund attacker Marco Reus has reportedly been angered by Barcelona's recent acquisition of Luis Suarez from Liverpool.
It is believed that earlier this year an agreement was reached for Germany international Reus to arrive at the Camp Nou this summer.
However, new Barca head coach Luis Enrique preferred Suarez to the 25-year-old, who has since seen his proposed switch cancelled, according to The Express.
The report adds that Reus rejected advances from Manchester United because he believed that a move to the Catalan outfit had been secured.
Further speculation has suggested that Liverpool could now launch a bid for Reus's signature, with an offer in the region of £44m mooted.