BRIEF-Head of Canada's largest private sector union doesn't see NAFTA deal this week

this week@

Sept 19 (Reuters) -

* HEAD OF CANADA'S LARGEST PRIVATE SECTOR UNION, IN WASHINGTON TO CONSULT WITH CANADIAN OFFICIAL ON NAFTA, SAYS HE DOESN'T THINK THERE WILL BE A DEAL THIS WEEK

* CANADIAN UNION HEAD SAYS NAFTA NEGOTIATORS SPENT MUCH OF THE LAST DAY TALKING ABOUT AGRICULTURAL ISSUES (Reporting by David Ljunggren)