Well, he's more kind of advocated both. In that he also says:
I cannot stress too much that Britain is part of Europe, and always will be. There will still be intense and intensifying European cooperation and partnership in a huge number of fields: the arts, the sciences, the universities, and on improving the environment. EU citizens living in this country will have their rights fully protected, and the same goes for British citizens living in the EU.
British people will still be able to go and work in the EU; to live; to travel; to study; to buy homes and to settle down.
Which sounds an awful lot to me like free movement. And he also says that all that will change is not being under the ECJ, and plays down the vote having anything to do with immigration which suggests he'd be open to free movement.
I suspect he's gearing up to go into "tough negotiations" promising a points based system and come out with some wishy-washy promise of a possible "emergency brake" that might potentially come into place if EU migration tops some largely implausible number. And, essentially, we'll get our own slightly tweaked version of the Norway option.