Reports this week had linked the former Portsmouth man with a move away from the County Ground but Di Canio revealed there are no offers on the table.
"There wasn't even any official request and not even any amount of money that they are ready to spend for Ritchie," the Italian told the Swindon Advertiser.
"Some news also came out about what happened last year. Some reports were £400,000, some were £500,000, that we rejected. No, last year a club came and they proposed to us nearly £1million for Ritchie.
"That is the truth. This is the only offer we have had. Last year a club came with a deal close to £1million. This year we did not receive any offers from any club."
Meanwhile Di Canio confirmed that on-loan Charlton midfielder Danny Hollands will spend six weeks on the sidelines recovering from a microfracture in his foot.