As I said, the President of the Treasury Board has already informed us, through the clerk, that it is more difficult for him to appear before the committee on Tuesday and Thursday mornings, but that he would be available on Monday, April 28, in the afternoon. He proposed discussing the main estimates, as well as a potential study that the committee has not started yet. It would be a study on open data. He suggested talking about the two topics at the meeting of April 28. That is the information we have from him. The open data study is not officially on the committee's agenda, but the president has definitely expressed an interest in appearing on Monday, April 28, in the afternoon.
Evidence of meeting #11 for Government Operations and Estimates in the 41st Parliament, 2nd Session. (The original version is on Parliament’s site, as are the minutes.) The winning word was clerk.
A recording is available from Parliament.