Washington: Special Counsel Robert Mueller plans to interview the former spokesman for US President Donald Trump's legal team as part of an investigation into potential collusion between Russia and Trump's campaign, according to a source with knowledge of the matter.

Mark Corallo had represented Trump's outside lawyers amid the federal and congressional Russia inquiries until he resigned last summer after revelations about a June 2016 meeting between Trump's son Donald jnr and a group of Russians.

Mark Corallo is said to have resigned over a statement the US President dictated in relation to a Trump Tower meeting Donald Trump jnr (pictured) had with Russians. Credit:AP

The Mueller team said they wanted to discuss the circumstances of his departure, with the interview was expected to take place within two weeks.

Corallo's departure in July came amid media reports that Trump's legal team was reorganising and considering ways to limit Mueller's probe.