Former Sen. Tom CoburnThomas (Tom) Allen CoburnThe real disease: Price transparency key to saving Medicare and lowering the debt Mr. President, let markets help save Medicare Pension insolvency crisis only grows as Congress sits on its hands MORE (R-Okla.) says he hasn’t seen enough “self-discipline” and “control over his ego” from presumptive GOP presidential nominee Donald TrumpDonald John TrumpSasse: Trump shouldn't dignify Putin with Helsinki summit Top LGBT group projects message onto Presidential Palace in Helsinki ahead of Trump-Putin summit Hillary Clinton to Trump ahead of Putin summit: 'Do you know which team you play for?' MORE.

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During a Thursday interview on MSNBC’s “Morning Joe,” the former senator was asked whether he had any hope that Trump would become a good leader for the Republican Party.

“Well sure, I have hope. I think everybody can change," Coburn responded.

"The question is, does he have the self-discipline and some control over his ego to be able to say ‘I’m wrong’ every now and then? I haven’t seen that, but that’s not a whole lot different than a whole lot of Washington.”

Coburn, who retired in 2015 after 10 years in the Senate, ruled out an independent presidential bid last month.