The 24-year-old fullback has been a regular starter for Sofia, primarily playing left back. The club is currently second in the Bulgarian first division behind Ludogorets. Along with left back, Nedyalkov can also play defensive mid and center back, making him a more versatile player, which may be helpful with the number of competitions FC Dallas is in this year.
Nedyalkov has made five appearances for the Bulgarian national team, including four in World Cup qualification, starting in two matches and coming off the bench for the other two.
The addition of Nedyalkov comes after a more quiet beginning to the off-season for Dallas.