Expansion franchise Philadelphia Union is close to signing a naming rights deal for their stadium.

Energy company PPL Corp. is on the verge of agreeing a $20million deal with the Union who join MLS this season, reports Jeff Gammage of the Philadelphia Inquirer.

The club's stadium in Chester will be called PPL Park but will not be ready for use straight away.

The Union will play their first few home games at Lincoln Financial Field as the new stadium will not be finished in time for the start of the 2010 season.