Next first minister will need centre-left allies, says Scottish Greens’ Harvie

Greens co-leader says SNP will have to do deals with anti-independence Tories unless it keeps his party on side

• There is despair': fears for Scotland's green policies as power-sharing ends

The Scottish National party will find it far harder to govern unless the next first minister agrees to work with centre-left parties, a co-leader of the Scottish Greens has said.

The Greens were in a power-sharing deal with the SNP until Humza Yousaf unilaterally ended it last week, precipitating his downfall on Monday.