Newcastle midfielder Siem de Jong says he will be sidelined for another "couple of months" through injury.
The 25-year-old Netherlands international joined the Magpies for £6m from Ajax in July.
He played only three times for the club before injuring his knee during training last month.
"Just saw the surgeon in London and all looks good. Still a couple of months to go but I'm sure I will get back stronger," De Jong wrote on Facebook.
"I can slowly start building up strength again and start walking without crutches."
De Jong, who scored 57 goals in 168 league games for Ajax, missed much of last season through injury and sat out a significant proportion of the Magpies' pre-season campaign with a foot problem.
Newcastle are 18th in the Premier League, with seven points from eight matches.
After securing their first league victory of the season against Leicester on Saturday, they face Tottenham and Liverpool in their next two league games.