Santos was signed from Turkish side Fenerbahce in the January transfer window but has so far produced mixed performances - scoring twice, including one in Arsenal's last Premier League outing, a thrilling 5-3 victory against Chelsea - but attracting criticism for the defensive side of his game.
“I feel it’s an important part of winning – having a full-back who creates,” Wenger said in an article in The Daily Mail.
Wenger believes the 28-year-old international typifies the style of defenders to come through Brazil's national set-up in recent years.
“Take the Brazilian national team, the teams who have won, you will see that there is always two good full-backs.
“With two average full-backs they would not have won. They had Carlos Alberto, Roberto Carlos. Jorginho, Cafu.
“He needs to improve on defending, of course. But it’s easier to give him that. They have a different perception of full-backs in Brazil than in Europe.”
Arsenal face West Bromwich Albion in their next Premier League clash, when they will be hoping to keep a clean-sheet, a feat they have managed just three times in their opening 10 fixtures. The Gunners currently have the third leakiest defence in the division - though their goals against column is heavily influenced by the eight they conceded at Old Trafford on a black day for the club in August.
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