Nov 23 (Reuters) - Zayo Group Holdings Inc ZAYO.N :
* To acquire Allstream
* Says purchase price is CAD $465 million
* Mts has agreed to retain pension obligation, related pension plan assets, of
retirees and other former employees of allstream
* Says all-cash transaction is expected to be funded with existing cash and
revolving credit facility capacity
* Source text for Eikon
* Further company coverage ZAYO.N