McMichael signed a six-year, $40.5 million contract with the Blues on Thursday.
Gastrin was loaned to Brynas IF of the SHL on Monday.
MacDonald signed a one-year, two-way contract with Washington on Sunday.
Ovechkin signed a one-year, $4.25 million contract with the Capitals on Thursday.
Dunne signed a one-year, $850,000 contract with the Capitals on Wednesday, Tom Gulitti of NHL.com reports.
Jenner signed a four-year, $23 million contract with the Capitals on Wednesday, per Stephen Whyno of the Associated Press.
Dube signed a one-year, $850,000 contract with the Blues on Wednesday.
Desharnais signed a four-year, $16.8 million contract with the Capitals on Wednesday.
Holl signed a one-year, $900,000 contract with the Capitals on Wednesday, David Pagnotta of The Fourth Period reports.
Brodzinski signed a one-year, $850,000 contract with the Capitals on Wednesday, Peter Baugh of The Athletic reports.
