Striker Theo Walcott has tipped new teammate Sead Kolasinac for instant success at Arsenal.

On 6 June 2017, Arsenal confirmed the signing of Kolašinac on a free transfer from Schalke 04.

He was announced as Arsenal's first summer signing for the upcoming season and scored his first goal in the 2017 FA Community Shield after coming on as a substitute for the injured Per Mertesacker.

Walcott said he was impressed by the Bosnian international's physical attributes and work-ethic during the pre-season preparations.

"Sead looks an absolute tank," Walcott told the British media. "He's one tough unit to get past and I'm sure his physical attributes are going to be key to us this season.

"You can see the power he's got when he's got the ball, his pace and everything. It’s beautiful to watch and he's a great addition to the squad.

"Trust me he's not easy to get around (in training) – he's quite wide as well. He fits perfectly for the Premier League, he's absolutely perfect."

Arsenal, who finished fifth in the league last season, host Leicester City in the opening game of their campaign on Friday.