Turkish guard Derin Erdogan thought she’d check out of basketball for a few weeks once her season with Galatasaray came to an end. But a last-minute call from the Liberty earlier this month changed everything.  “It’s kind of funny,” Erdogan recalled Tuesday. “I always had a dream to play in the WNBA obviously, but I never thought it would happen this year. Maybe in the future, but this year, I just mentally was like, ‘I guess I’m done after the season.’ ” Erdogan, 23, was packing for the EuroLeague Women Final Six in Zaragoza, Spain, when her phone rang. She was surprised to see her agent’s name pop up across the screen. She initially was confused why her agent was calling so late, but figured it was important.  Erdogan was speechless when her agent told her the Liberty wanted to sign her to a training camp contract.  “I was just shocked,” she said. “I couldn’t react that much, but I was so happy. But I was just in shock basically and [my agent] was so confused because I couldn’t react.…