Key Takeaways SL Green will buy Park Avenue Tower for $730M, expanding its Park Avenue footprint.The tower's below-market leases offer potential income growth as the market strengthens.SL Green sold a 5% One Vanderbilt stake to Mori, freeing capital while keeping control.SL Green Realty Corp. (SLG) , the leading office REIT in Manhattan, has made two strategic moves recently that signal confidence in its asset base and perhaps its future trajectory.SL Green has agreed to acquire Park Avenue Tower at 65 East ...