CREATE TABLE table_49737 ("Tie no" CLOB, "Home team" CLOB, "Score" CLOB, "Away team" CLOB, "Date" CLOB)

Who was the away team when Manchester United played at home on 10 February 1951?
SELECT "Away team" FROM table_49737 WHERE "Date" = '10 february 1951' AND "Home team" = 'manchester united'
SELECT "Away team" FROM "table_49737" WHERE "Date" = '10 february 1951' AND "Home team" = 'manchester united'