Alexis Sanchez has admitted that he has been impressed by the impact made by "intelligent" Sead Kolasinac since the defender joined Arsenal in the summer.

The Bosnia-Herzegovina international already has two goals and three assists to his name for the Gunners, earning praise from manager Arsene Wenger for his latest impressive showing against Swansea City last time out.

Sanchez is the latest to hail Arsenal's free signing from Schalke 04, with whom he has built up a good understanding down the flank over the past two months.

"It's tough [against him in training] because he's strong and he's hard to get around," he told the club's official website. "He's a very experienced player and he's really strong.

"When it matters [in games], he finds me and makes good passes so I can score. He is an intelligent player who can create good goalscoring opportunities.

"He's already demonstrated his quality. He's scored goals, provided assists and shown what he can do both in European and league games."

Kolasinac previously spent six years with Schalke, emerging through the youth ranks in 2012 and making close to 100 Bundesliga appearances.