Blackstone Group and Stonepeak Infrastructure Partners are circling communications infrastructure company Zayo Group Holdings Inc. once again. Previously, Zayo rejected a $6 billion-plus offer from the Blackstone-led consortium (NYSE: BX), which also includes KKR & Co. (NYSE: KKR), I Squared Capital, GTCR and Charlesbank Capital Partners (h/t CTFN). Back in November, Bloomberg reported that Zayo has been attracting suitors and takeover interest from private equity funds and investment firms.