Arsenal managed a 2-0 win over Napoli last night at the Emirates in the first leg of their Europa League encounter. The Gunners played some scintillating stuff in front of their own fans to make it eight wins in a row at home. Aaron Ramsey opened the scoring in the 11th minute before Kalidou Koulibaly diverted Lucas Torreira’s shot to double the Gunners lead. The only regret was that they could not put more past Alex Meret, who had a good game between the sticks for the Serie A side.  It leaves the Neapolitan outfit with a slim chance of still making it through, though Emery ranked the chances at 50/50. However, Ancelotti noted that the Arsenal players were tiring towards the end of the game and revealed that his side intend to take advantage of that at the San Paolo Stadium. The ex-Chelsea boss said: “I think that the second half was completely different. “The fact we push a lot at the end and we were physically a lot better as some of their players had cramps.  “This is another thing that we can use in Naples.” Arsenal will face Watford at Vicarage Road on Monday night, hoping to regain some away form before the end of the season as they look to finish in the top four. And Emery hs hit back at Ancelotti, claiming that his methods will not be changed despite the Italian’s comments. He said: “I think we’re OK. The players finished tired because they worked a lot. But I prefer to finish like that and not finish matches with the possibility to continue playing.  “I know, and the players also, that we need every player to be ready to play and help. On Monday, I am sure we are going to play different players but [try] to find the same performance. “Some players after playing with this demanding performance physically, maybe we need something different. Next week it will be the same in Naples. “We’re going to prepare for Monday first, and also recover the players after the game today thinking that we are going to play a lot of matches [every] three days. “We need every player with the commitment, with the behaviour and the performances.”