The 2040 issue was up 1.4 cents to its highest level in two weeks, according to Tradeweb data. Turkey's five-year credit default swaps eased to 377 basis points, down 6 bps from Thursday's close, according to IHS Markit data.

"At least for now, it's safe to assume that Trump will not be in a hurry to make a final decision on imposing sanctions on Turkey due to his good relationship with President Tayyip Erdogan," said Rabobank's Piotr Matys.

Trump was speaking on Thursday following a U.S. decision to remove Ankara from the F-35 fighter jet programme after it began receiving delivery of the Russian S-400 missile defence system last week.