South Korean star Son Heung-min has fractured his right arm and is not expected to return for the season, delivering a blow to their hopes of silverware this season and qualifying for the Champions League next season. 

The 27-year-old South Korean international forward suffered the injury in the 3-2 Premier League victory over Aston Villa -- in which he scored twice including the late winner -- on Sunday. 

Son suffered the injury in a robust first-minute challenge from Villa's Ezri Konsa. 

"Son Heung-min is to undergo surgery this week after sustaining a fracture to his right arm," read Spurs statement on Tuesday, "following surgery, our medical staff shall be reviewing management options for Son's rehabilitation with the player expected to be sidelined for a number of weeks." 

Son has 14 goals and eight assists in the league and Champions League this season 

Meanwhile, Hotspur manager Jose Mourinho does not expect the forward to play again this season.  

"I'm not going to count on him again this season," Mourinho told a news conference. "If he plays two or three games then it's because he (Spurs' press officer) is very optimistic, but I'm not counting on him." 

Spurs striker Harry Kane is sidelined until April with a hamstring injury and Mourinho compared the loss of Son to climbing up stairs that break without warning. 

"We are holding by our arms on the balcony. Now we have two options, to fall and die... The other is to climb," the Portuguese said. "We will be on that balcony fighting with everything we have." 

Mourinho said 18-year-old striker Troy Parrott was not ready to fill in for Son or Kane, and that winger Ryan Sessegnon could not play as a striker. 

(With input from AFP and Reuters)