Sanchez 'not himself': Wenger

London - Arsenal forward Alexis Sanchez is "not himself" and could be feeling the effects of fatigue after making an impressive start to life in the Premier League, manager Arsene Wenger said.

The 26-year-old has been Arsenal's standout performer this season and has scored 18 goals in 32 appearances since signing from Barcelona for £35 million in July.

But the Chile international went off with a knee injury in last week's 2-1 win over Leicester City and Wenger conceded that Sanchez may be showing signs of fatigue.