Costa Rican international Elías Aguilar joined the Philadelphia Union earlier this week for a week-long training stint.

The 25-year-old attacking midfielder plays for Club Sport Herediano in Costa Rica and has made a dozen appearances for his country, including an appearance off the bench in his country’s first match of the 2015 Gold Cup.

Herediano is one of the more notable clubs in the top flight in Costa Rica, having qualified for the CONCACAF Champions League each of the last six years.

Aguilar plays centrally and on the left side as an attacker. He has 24 goals and 15 assists in 178 appearances across all competitions for the club dating back to 2011 and also had a goal in five appearances during a loan spell with Liga MX club Deportivo Zacatepec in 2013-14.

TransferMarkt.com lists his value at around $500,000.

The Union have one open first team roster spot and an international slot, both of which were freed up by the season-long loan of midfielder Eric Ayuk to Sweden.

Aguilar was in training with the first team at Power Training Complex in Chester on Wednesday.

As he has consistently with players invited to train with the team - most notably Oguchi Onyewu, who ended up signing a week after preseason opened - head coach Jim Curtin characterized Aguilar’s time with the team as “just training.”