Manchester United striker Alexis Sanchez may need to leave the club, according to Arsenal legend Paul Merson.
Merson believes Sanchez cannot fit in Jose Mourinho's system.
"He looks a bit lost at the moment but that could be confidence," Merson said. "I can't believe it's nearly six months without a goal. For someone who is supposed to be that good that's a long time as a forward.
"He's struggling at Manchester United. They don't make as many chances as Arsenal. Arsenal are all out attack but that's not the way they play at Old Trafford. When Arsenal play they just go gung-ho, that's not the case at Manchester United.
"At United, there's a structure and they say let's not get beat first and them go from there. That's why I think he's finding it difficult. At Arsenal it was free-flowing but it wasn't successful, they didn't win anything.
"It's the pressure. When he was at Arsenal he was the top man. Everything went through him plus he could try things at Arsenal. He could flick a ball here, flick a ball there and if it didn't come off you were playing next week. That is not the case at Old Trafford.
"With Jose Mourinho we saw what he was at Chelsea with Eden Hazard, if you are not getting back and following the full-back back you're off and you're not playing next week. That didn't happen at Arsenal."