Man City striker Guidetti hooked at Feyenoord for taunting opponents
The Swede scored during the 3-0 win, but upset both sets of players with his celebrations.
Koeman said: "Good for John and for us that he's again scored an important goal. Unfortunately, I was later more or less forced to substitute John.
"You saw his disparaging actions.
"He needs to be smarter and less arrogant."