There were two notable players absent from the 49ers' training camp practice on Wednesday in Santa Clara, Taylor Wirth of NBC Sports Bayarea reports.

Both star wide receiver Brandon Aiyuk and All-Pro left tackle Trent Williams did not participate in the early portion of practice available to the media.

Coach Kyle Shanahan confirmed to reporters Wednesday that Williams' absence is contract-related.

ESPN's Jeremy Fowler reported on June 9 that Williams "eventually" will want a reworked contract.

Aiyuk was on hand for practice but watched from the sidelines in street clothes before appearing to leave the field with 49ers president of football operations and general manager John Lynch, according to The Athletic's Matt Barrows.

Don't forget to follow us on Twitter at http://twitter.com/theredzoneorg 
      
 Don't forget to follow us on Threads at https://www.threads.net/@theredzoneorg 
        
 Like us on Facebook at http://facebook.com/Theredzone.org