"We have an interest to do this as fast as possible," Christian Bruch told analysts during the group's capital markets day, adding the sooner a deal could be done, the faster operational problems at Siemens Gamesa could be fixed.
Under a tentative timeline, the bid, which was announced on Saturday, would launch in mid-September before an extraordinary general meeting rubber-stamps it in November.
"It could get faster ... but we're obviously not alone in control of the timescale," Bruch said.
($1 = 0.9336 euros)
(Reporting by Christoph Steitz, Editing by Miranda Murray)