REFILE-UPDATE 2-Vivendi investors fret about GVT price

(Refiles to correct the day to Monday in first paragraph)

* Vivendi unexpectedly gains control of Brazil's GVT

* Vivendi shares down 2.7 pct

* Analysts worry over fiscal discipline, high M&A multiples

* GVT deal seen increasing likelihood of NBCU stake sale

By Dominique Vidalon and Nicola Leske

PARIS, Nov 16 (Reuters) - Vivendi's (VIV.PA) shares fell on Monday as investors fretted that its dramatic, high-priced purchase of Brazilian telecom group GVT (GVTT3.SA) from under Telefonica's (TEF.MC) nose signalled more dealmaking.