Mikel Arteta fears Bukayo Saka 's hamstring injury "is significant" after the winger pulled up in the second half of Arsenal 's 5-0 win over Leeds .

The England international scored Arsenal's second goal in their home opener but went down without contact before the hour mark and was immediately replaced by Leandro Trossard .

It was a bittersweet day in general for Arteta and Arsenal, as the club announced the signing of Eberechi Eze from Crystal Palace , before Viktor Gyökeres marked his first two Premier League goals.

But captain Martin Ødegaard also had to leave the field in the first half after suffering a shoulder injury, before Saka joined the growing injury list after 54 minutes.

Saka missed almost four months last season with an injury to his other hamstrin

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