With injuries and question marks dominating their wide receiving corps, the 49ers will bring in Laurent Robinson for a workout on Thursday.

Robinson was released by the Jacksonville Jaguars one year after signing a five-year 32.5 million dollar contract. Robinson’s breakout season came in 2011 with the Dallas Cowboys when he gained 858 yards and scored 11 touchdowns. Last year did not go as planned, however, as he missed nine games due to concussions and only caught 24 passes. Robinson has also worked out for the Patriots, Jets, Dolphins, and Lions.

The 49ers’ interest in Robinson could be because A.J. Jenkins and Kyle Williams are both battling hamstring injuries, or because no receiver has stepped up opposite Anquan Boldin. The situation bares watching as the 49ers need someone to emerge as a viable number two receiver option.

* All-Pro linebacker Patrick Willis injured his right hand Wednesday and may have a slight fracture. He will undergo an x-ray Thursday.

Willis has had breaks in his right hand twice during his NFL career. In 2007 he played with a cast on his hand but did not miss any time. He broke it again in 2010 and played two games with the injury. He did sit out the last game of the season that year as the 49ers were eliminated from playoff contention.

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