Straka to Czech Republic
Not one of the elite free agents, but definitely somehow who could help your team. Martin Straka has called it quits on the NHL, agreeing to a deal with a Czech team in his native country. He was a great winger, with a career high of 95 points in 2000-2001. He wasn't expected to sign with the Rangers, but was rumored to have interest from Pittsburgh, Montreal and others.
UPDATE: It seems those reports were premature, and Straka is going to test the waters July 1st.