According to Sky Sports Spanish expert Guillem Balague, Riga has been engaged in talks with Bolton, with a view to joining them when his appeal has been granted by the Spanish FA.
He said "The Premier League has always been my first target. I have always wanted to play in the Premier League because it is also one of the best leagues in Europe.
"A very close friend of mine George Boateng always calls me - 'come to England, with your style of play you'll make it'
"I chose to come to Spain first, but you never know. If there is an official offer I would not hesitate."