Feyenoord coach Ronald Koeman has blasted on-loan Manchester City striker John Guidetti.

The Swede has been a revelation this season in the Eredivisie, but also is upsetting Koeman with some of his antics.

"John may be best to work harder in the field", Koeman said. "And furthermore, he must be less concerned with his own game and more about Feyenoord."