Kolasinac now has more goals and assists to his name at the Emirates this season (five) than either Alexandre Lacazette (four) or Sanchez (three).
"It's tough [against him in training] because he's strong and he's hard to get around!" Alexis told Arsenal Player. "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."