He told Arsenal TV Online: "Who we will buy in the summer is not decided yet, but I have players in mind.
"We have lists which we keep up to date, player number one, two, three or four in the positions were we look for - and you go of course for the number one."
Wenger added: "I believe at some stage you need to strengthen the team, but changing the team means kick some players out and replacing them. That is not the feeling I have. I feel this team has been absolutely tremendous."