The defender originally moved to Craven Cottage on loan in January from Swiss club Young Boys.

Kallio did not make a first-team appearance for Fulham last season, but has been offered a long-term contract in West London.

He has clearly shown enough in training to convince Cottagers manager Roy Hodgson to keep him for the next two seasons.

versatile defender

A Fulham statement read: "The club can confirm that Toni Kallio has signed a two-year deal with Fulham which will see him remain at Craven Cottage until June 2010.

"The versatile defender can play at both centre and left-back positions and previously played for HJK Helsinki and Molde FK."