By Chris Harris

Arsène Wenger has warned not to expect too much of overseas players signed in the January transfer window.

The Arsenal manager has been heavily linked with Russian playmaker Andrei Arshavin while a handful of major deals have already gone through including Emile Heskey's move to Aston Villa, Jimmy Bullard's switch to Hull City and the return of Jermain Defoe and Pascal Chimbonda to Tottenham.

Wenger believes that quartet - already well-versed in the rigours of the Premier League - should settle quickly at their new - or in some cases old - club. But he cast doubt on the immediate impact of newly-imported overseas talent such as Colombian striker Hugo Rodallega, the replacement for Heskey at Wigan.

"It is very difficult to assess what kind of impact the player will have on the club and the results of the club," said Wenger ahead of tonight's trip to Everton.

"For example with Defoe and Chimbonda going back to Tottenham there is no uncertainty about their performance, but when I see Rodallega go to Wigan it is difficult to judge now what sort of impact he will have.

"Maybe he will be an instant success but normally it will take three or four months to settle."

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 28 Jan 2009