Mr Robinson said much was possible, but there was still a long way to go before reaching any firm deal
Media playback is unsupported on your device
Video

Peter Robinson: Welfare 'could be debated in assembly next week'

The welfare reform bill could be debated in the assembly again next week if there is sufficient movement in ongoing negotiations, the first minister has said.

Peter Robinson told the BBC it was "possible" to reach agreement by mid-week.