Complex sentence: He was not selected in the 2008 NHL Entry Draft, his first draft of eligibility, but he nonetheless attended the Philadelphia Flyers' training camp on an amateur tryout basis; he was released on September 29.
Split into simpler sentences: He was not selected in the 2008 NHL Entry Draft, his first year of eligibility. However, he attended the Philadelphia Flyers' training camp on an amateur tryout and was released on September 29.