"Great meeting with @RailaOdinga. We discussed prospects for lasting reconciliation in #Kenya after divisive elections and after the leaders' handshake," he tweeted.
Malley arrived in Kenya from Somalia which is among the countries his company conducts research and analysis to inform policy making.
Raila delivered a keynote address at the Devolution Conference in Kakamega on Wednesday in which he gave more details of his Memorandum of Understanding (MoU) with President Kenyatta.
He explained that among the issues it would tackle was corruption and shielding devolution.
"Fighting corruption and shielding devolution are no longer partisan issues. We shall not provide sanctuaries. Very soon, the corrupt will be on their own," he stated.
While proposing a new 3-tier system of government, Raila noted that despite significant process having been made in devolved units, graft was killing devolution.
"This corruption network is eating devolution from inside out, the greatest gift we have bestowed on ourselves since independence. The Ethics and Anti-Corruption Commission (EACC) should conduct proper lifestyle audits," Raila declared.
He specifically noted that Governors, Members of County Assemblies, County Executive Committee members and other county officials were accused of perpetuating the corruption.
Uhuru is expected to disclose details of the deal during his State of The Nation (SoTN) address on May 2.