Nwosu exited Saturday night's preseason win over the Browns with a knee injury and will undergo further testing, Brady Henderson of ESPN.com reports.
"Not sure yet," coach Mike Macdonald said. "We'll probably know more in the next couple days." Following a career-best 9.5 sacks in 2022, Nwosu suffered a torn pec in Week 7 last season and missed the remainder of the year, finishing with just 2.0 sacks across six contests. Losing Nwosu for any length of time would be an issue for Seattle's pass rush.