The Miami Heat have scored another free-agent coup, convincing Ray Allen to leave a richer offer from the Boston Celtics and agree to sign with the defending champions, agent Jim Tanner told ESPN.com.

The Heat felt positive about the presentation they made to Allen over several hours in a meeting on Thursday in Miami, sources said, but Allen flew back to his home in Connecticut to mull over the decision. He informed both teams Friday night of his decision.

It is believed Allen will accept the Heat’s mid-level exception that starts at $3.09 million and could be worth a maximum of $9.5 million over three seasons.

Boston, where Allen had played for the past five seasons and won a championship in 2008, had offered Allen a two-year deal at double the salary for $12 million plus a no-trade clause.

via Brian Windhorst of ESPN.com