Greenock Morton have agreed a deal to sign former Celtic trainee Denny Johnstone on loan from Birmingham City.

The 20-year-old striker’s move comes swiftly on the back of a short-term contract being handed to former PSV Eindhoven forward Romario Sabajo.

Sabajo, 26, who left Dutch third-tier outfit Lienden last summer, has signed until January.

Johnstone

signed a three-year contract with Birmingham

last summer after rejecting a new deal with Celtic.

He had moved to the English Championship club after Dundee United could not agree a compensation fee with the Scottish champions for the Scotland Under-19 international.

Denny Johnstone in action for Birmingham

Johnstone has made two substitute appearances for Birmingham

Johnstone, who had made two substitute appearances for the Blues, has subsequently had loan spells with Conference Premier outfit Macclesfield Town then two League Two outfits – Cheltenham Town and

Burton Albion.

He and Sabajo could make their Morton debuts in Saturday’s Scottish League Cup game at home to Elgin City.

Meanwhile, a third forward is attempting to win a contract with Jim Duffy’s Morton.

Australia-born 21-year-old Chris Duggan is continuing his trial with the Greenock outfit having been released by Partick Thistle.

Duggan was last season on loan to Dumbarton in the Championship having had previous spells with Forfar Athletic and Queen’s Park.