Lukaku goal just enough for lacklustre Man United

Soccer Football - Premier League - Manchester United vs AFC Bournemouth- Old Trafford, Manchester, Britain - December 13, 2017 Bournemouth's Adam Smith in action with Manchester United's Nemanja Matic Action Images via Reuters/Jason Cairnduff

MANCHESTER, England (Reuters) - A lacklustre Manchester United responded to their derby defeat by Manchester City with an unimpressive 1-0 Premier League win over Bournemouth at a subdued Old Trafford on Wednesday.

Romelu Lukaku's ninth league goal of the season, a 25th- minute header at the back post from a Juan Mata cross, was enough to give second-placed United the win but they had keeper David De Gea to thank for the three points.