LONDON, Sept 3 (Reuters) - Manchester United have signed Everton's powerful Belgium forward Marouane Fellaini for 27.5 million pounds ($42.80 million), the Merseyside club said on their website (www.evertonfc.com). Fellaini, 25, was linked with a move to the Premier League champions throughout the transfer window although United's former Everton manager David Moyes left it until just before the deadline on Monday to land one of his main transfer targets. ... More...