Grizzlies make qualifying offers
Speights averaged 8.8 points and 6.2 rebounds in 60 games last season after being acquired from Philadelphia in January.
Arthur missed the 2011-12 season because of a torn right Achilles. His career average is 6.9 points and 4.2 rebounds.
Memphis can now match any offer Speights or Arthur gets from another team.
Copyright 2012 by The Associated Press