Why Man Utd can't afford to underestimate Bilbao published at 11:19 BST 1 May
Alex Fletcher
BBC Sport journalist

Only Barcelona, Atletico Madrid and Osasuna have beaten Athletic Bilbao at San Mames this season.
Add to that the prospect of a final at their own stadium and you create quite a formidable opponent.
That is the size of the task facing Manchester United tonight.
The Basque Country may only have 3.1m inhabitants, but the team from its biggest city boast a squad full of talent.
Despite top scorer Oihan Sancet missing the match through injury, England fans will remember Nico Williams, who scored the opening goal in last summer's European Championship final and has netted in the previous two knockout rounds.
On the opposite wing is brother, Inaki. A player whose pace and dribbling has seen plenty of Europe's top clubs chase him throughout his career.
And that is just their attack.
Bilbao have the best defence in La Liga, conceding just 26 goals so far this season.
Ruben Amorim's side have almost doubled that total in the Premier League, shipping 47 and having a negative goal difference.
United's goalkeeper struggles have been well documented this campaign but their opponents have had no such issues.
Both Unai Simon and Julen Agirrezabala have performed well for Bilbao with 12 clean sheets between them in their 30 league appearances.
Also within that backline is captain Oscar de Marcos, who scored when Bilbao knocked United out of the Europa League at the last-16 stage in 2012.
That tie was one of many Spanish struggles for United.
According to Opta, United's past six eliminations from the knockout stages of major European competition have come against Spanish sides.
In fact, their win rate against teams from Spain is the worst out of any country at 31%.
So Thursday's game is probably more difficult than many anticipate.