The game against the Spaniards (who finished 11th last season) will be on Wednesday, 4th August.
FULL DETAILS OF ALL OTHER FRIENDLIES ARRANGED SO FAR
Wednesday 21st July - Rotherham v Boro (Friendly 19:45)
Wednesday 21st July - York City v Boro XI (Friendly 19:00 tbc)
Saturday 24th July - Preson v Boro (Friendly 15:00)
Saturday 24th July - Scarborough v Boro XI (North Riding Senior Cup Final, 15:00)
Tuesday 27th July - Nottingham Forest v Boro (Friendly 19:45)
Tuesday 27th July - Bradford City v Boro XI (Friendly 19:45)
Saturday 31st July - Hansa Rostock v Boro (Friendly 14:00)
Hansa finished 9th in the Bundesliga last season
FULL DETAILS OF ALL OTHER FRIENDLIES ARRANGED SO FAR
Wednesday 21st July - Rotherham v Boro (Friendly 19:45)
Wednesday 21st July - York City v Boro XI (Friendly 19:00 tbc)
Saturday 24th July - Preson v Boro (Friendly 15:00)
Saturday 24th July - Scarborough v Boro XI (North Riding Senior Cup Final, 15:00)
Tuesday 27th July - Nottingham Forest v Boro (Friendly 19:45)
Tuesday 27th July - Bradford City v Boro XI (Friendly 19:45)
Saturday 31st July - Hansa Rostock v Boro (Friendly 14:00)
Hansa finished 9th in the Bundesliga last season