Mustapha Riga (right) will fill the vacancy left by El Hadji Diouf

Bolton have signed Dutch winger Mustapha Riga on a three-year deal, subject to international clearance.

The under-21 international was born in Ghana but moved to the Netherlands as a youngster and played for three Dutch clubs before moving to Spain's Levante.

The 26-year-old is a naturally attacking player and will be expected to fill the shoes of El-Hadji Diouf, who moved to Sunderland also on Monday.

Riga becomes manager Gary Megson's third major summer signing.

He brought in Sweden international striker Johan Elmander from Toulouse and England under-21 international Fabrice Muamba from Birmingham in June.

606: DEBATE I'm quite pleased with Riga - apparently he's in the Jason Roberts mould boltonsboy

Riga was one of a number of players forced to protest at Levante's failure to pay them last season.

The club suffered acute financial problems which culminated in their relegation from the Spanish top flight.