Fabio Capello has said he "does not intend" to reply to criticism from his former Russia assistant coach Christian Panucci, who claimed Capello had failed to stand up for members of his staff.
Panucci accused Capello of "disgraceful" behaviour for failing to act as his contract with the Russian Football Union (FUR) lapsed in the summer.
The former Roma and Chelsea defender had been working as an assistant to Capello until his deal expired following the 2014 World Cup.
Although not offered a new contract, Panucci was asked by the FUR if he would continue working alongside Capello and another assistant, Massimo Neri, who was also working for free following Russia's return from Brazil.
Panucci and Neri refused to report for a training camp earlier this month and both have now ended their collaboration with the FUR, which has also stopped paying Capello because of financial problems.
Panucci accused Capello of not standing up for his colleagues over the problem, telling Gazzetta dello Sport: "I thank him [Capello] for the opportunity he gave me -- but the way he behaved with me and all of his Italian staff was disgraceful.
"I will say it to his face when I see him next. A great coach should defend his own people, but he didn't do that.
"I was working without a contract, and I said to myself: 'That's enough.'"
But the former England coach, speaking to Sky Sport Italia on Tuesday, said: "I feel offended. I don't intend to reply."
Capello's future with Russia, the 2018 World Cup hosts, appears in the balance after the federation's revelation that it could no longer afford his wages. The Italian claimed he had not been paid for five months.