By Declan Taylor

Arsène Wenger will make changes to his side for the Champions League clash with Porto on Tuesday night despite insisting that his players were not complacent against Hull.

The Frenchman, who enters his 13th year as Arsenal manager this week, rejected suggestions that the convincing wins at Blackburn and Bolton had made his team overlook Hull. Instead, Wenger pointed at Arsenal's lack of height throughout the team as a reason for the defeat.

"We gave them too much room for the first goal and we didn't clear the ball on the second one," said the 58-year-old. "I believe that we have more a size problem in our defending than a quality problem. It's not just the centre-backs who defend - as a team we are a bit short.

"Perhaps on a subconscious level we were thinking we would do it. I don't fault the players for not wanting it but it can happen when you have just won two away games. Where we are guilty is that we had difficulties in the first half but then still went 1-0 up and we shouldn¹t have given it away from that.

"There will be changes to the team. I don't believe we were thinking about Tuesday night, though."

Copyright 2014 The Arsenal Football Club plc. Permission to use quotations from this article is granted subject to appropriate credit being given to www.arsenal.com as the source 29 Sep 2008