The Labour leader also said he would campaign for a second EU referendum with the option of Remaining in the EU
Conservative MP Ken Clarke has said he would not reject an offer to become caretaker prime minister if it was "the only way" to stop a no-deal Brexit.
Guto Bebb, an ex-minister, says quitting EU without an agreement would cause "generational" harm.
No-deal Brexit: Jeremy Corbyn appeals to Tory MPs and opposition to leaders to appoint him temporary Prime Minister
14/08/2019
Opposition MPs have been in private talks for weeks about a government of national unity.
Labour leader insists he could lead a "strictly time-limited" national unity government to delay Brexit, call an election, and stop no deal on October 31.
Ed Davey calls for a government of national unity with Yvette Cooper or Hilary Benn leading
26/06/2019
The Lib Dem leadership hopeful surprisingly suggested Labour leadership for what comes after no-deal Brexit.