Conversation so far:
What team did Nikos Galis play for in Greece?
After suffering an ankle injury in the Boston Celtics 1979–80 preseason training camp, which prevented him from receiving a contract, Galis signed to play with Aris of Thessaloniki, Greece

Question: What position did he play for them?
Self-contained rewrite: What position did Nikos Galis play for Aris of Thessaloniki?