Sources are telling me that he’s expected to attract …

The chatter is building momentum as the NBA heads into the opening of its free agency period on Tuesday night. The Raptors have some business to focus on there, too, with power forward Sandro Mamukelashvili expected to opt out of the final year of his $2.8-million deal on Monday. Sources are telling me that he's expected to attract multiple offers starting at more than $10 million a year, which could make it challenging for the Raptors to keep him.