Holders Barcelona were drawn with 10-times winners Atletico Madrid in the King's Cup semi-finals on Friday and Celta Vigo will play Alaves in the other tie. 
Atletico host Barcelona in the first leg on February 1 with the second leg at the Nou Camp on February 7. 
Barcelona have won the Cup a record 28 times and have lifted it in the last two seasons under coach Luis Enrique, who said this week his ideal final would be against his former club Celta. 
"They (Barca) are one of the best teams in the world so it's going to be a great tie and the games will be very tough. The tie will be decided by details, especially concentration, which we'll need if we're to go through," Atletico midfielder Koke said. 
Barca knocked Atletico out of the Cup at the quarter-final stage in 2015 4-2 on aggregate following an action-packed second leg in which Diego Simeone's side were reduced to nine men.

Source: QNA