Falcao has missed his club's last three games, fuelling rumours the ex-Atletico Madrid striker may leave the principality outfit next month despite penning a five-year deal at the Stade Louis II in May.
Ranieri, however, insisted Falcao's absence from his team has been down to injury, and said that the Colombian could make his return at Guingamp on Saturday.
"There is absolutely no problem with Radamel," Ranieri said at a press conference.
"But even if I say that there's no problem, some people will still write the exact opposite, so everybody should write whatever they want.
"He should resume regular training on Wednesday and might play again at the weekend. We'll see."
Falcao has scored nine goals in 14 Ligue 1 outings this season.