Rubins agreed to terms on a two-year, entry-level contract with Toronto on Wednesday.
Kral inked a three-year, entry-level contract with Toronto on Wednesday.
Tavares racked up 26 goals and 60 points in 63 games before the NHL suspended its season in March.
Marner notched 16 goals and 67 points in 59 games before the NHL halted play in March.
Matthews sits third in the NHL goal race with 47 in 70 games, just one snipe behind David Pastrnak and Alexander Ovechkin.
Nylander has 31 goals and 59 points in 68 games this season.
Matthews and his teammates learned Thursday the NHL announced that the 2019-20 season has been suspended until further notice due to the coronavirus pandemic.
Andersen will patrol the crease during Thursday's home game versus Nashville, Joshua Kloke of The Athletic Toronto reports.
Tavares notched two power-play assists in Tuesday's 2-1 win over the Lightning.
Marner picked up two power-play assists in Tuesday's 2-1 win over the Lightning.
Andersen stopped 32 shots in Tuesday's 2-1 win over the Lightning.
Andersen will defend the blue paint during Tuesday's home game versus the Lightning, Mark Masters of TSN.ca reports.
Abramov signed a three-year, entry-level deal with the Maple Leafs on Tuesday.
Rielly (foot) will return to the lineup Tuesday against Tampa Bay, Elliotte Friedman of Sportsnet reports.
Liljegren was reassigned to AHL Toronto on Friday.
Ceci (ankle) will return to the lineup Friday against the Ducks, Sportsnets' Chris Johnston reports.
Toronto activated Ceci (ankle) off injured reserve Friday.
Bracco has rejoined the Marlies after a personal leave from the squad, Kevin McGran of The Toronto Star reports.
Sandin was a healthy scratch Monday against San Jose.
Campbell will tend the road twine against Anaheim on Friday, Mark Masters of TSN.ca reports.
Andersen will guard the road goal during Thursday's clash with the Kings, Sportsnets' Chris Johnston reports.
Mikheyev (wrist) returned to practice Monday, Terry Koshan of the Toronto Sun reports.
Ceci (ankle) will travel with the team on its three-game road trip in California but won't play in any games, Mark Masters of TSN.ca reports.
Campbell will defend the road cage against the Sharks on Tuesday, Mark Masters of TSN.ca reports.
Rielly (foot) could rejoin the Maple Leafs' lineup as soon as March 10, Sportsnets' Chris Johnston reports.