Markets will struggle to find a theme
The Chicago Fed National Activity index is due at the bottom of the hour and then at 10 am ET (1400 GMT) it's the existing home sales report.
Neither release tends to be a big market mover and Lockhart is the only central bank speaker on the economic calendar (at 1640 GMT) so there isn't much for the market to chew on.
The PBOC's Zhou warned about debt on the weekend and I thought that might catch the market's imagination but it hasn't so far. The only market drivers are Brexit fears and oil.