Morning reports suggested that the Red Star Belgrade midfielder was on the verge of joining the club. The 25-year-old has scored nine goals in 38 appearances for his country.
"He's on the shopping list of quite a few players," explained Glenn. "That's all I can say at the moment.
"We're certainly not signing him today. He's a lad we've been monitoring, like five or six others. I can't say much more than that at the moment."
Glenn confirms that he has been 'monitoring' Slovenian international Milenko Acimovic, but says he is one of a number being watched.