Roma coach Zeman: Pjanic has apologised
Pjanic appeared to aim a verbal volley at Zeman during last week's derby defeat to Lazio.
"The lad came over afterwards to apologise, so evidently he must've said something," said Zeman.
"I am used to it, as I've been on a football field for 40 years and seen it happen everywhere. I understand his frustration and he wants to play, just like all the others, so he let something out after that goal."