Sead Kolasinac has had a huge impact on the pitch since his arrival in the summer - and he is just as intimidating an opponent in training, according to Alexis.
The Chile international is known for his high-energy approach and his ability to get past opponents, but taking on his new team-mate is a whole new prospect.
“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.”
Copyright 2020 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.