By Lewis Jones
Fryatt has scored nine goals already this season, which included both goals in last Friday's impressive away win against high-flying QPR.
Cox, who himself hit 29 goals last season for Swindon Town in League One, told www.lcfc.co.uk: "Fryatt is a player who works hard and his record last year was good.
"He was consistent and one of the reasons they (Leicester) got promotion. We have to be on our guard.
"He can make the step up. He's still high on confidence.
"The manager there (Nigel Pearson) obviously told him he would play and he's cracked on, carrying on his form.
"He's already in double figures (in all competitions) for this year so he has done well."