The club currently occupying the eighth place in the English championship will have to continue the rest of the season without one of the team leaders, the Spanish legionnaire Gaizka Mendieta.
The 30-year-old goalkeeper Mendieta suffered a serious knee injury in Sunday's match against Portsmouth, which his team finished in a 1-1 draw, and was carried off the field.
On Monday, the player's leg was scanned, and it was determined that the anterior cruciate ligaments were damaged. This means that Mendieta, who has represented Spain 40 times, will no longer be able to help his team this season.
Meanwhile, Middlesbrough received good news - defender Michael Reiziger has resumed training. The 31-year-old Dutchman was injured in the match against Arsenal in August and had shoulder surgery.