article_snippet: Arsene Wenger needs to spend in the summer to address shortcomings in several key areas .
article_snippet: Read how Arsene Wenger has gone almost two decades in Champions League without winning the prize with Arsenal .
article_snippet: Mauricio Pochettino could prove an obstacle but Champions League qualification may be the key.
highlights_snippet: Arsene Wenger needs to address three key areas in Arsene Wenger unbalanced squad .
  