Below is the list of tables from the database along with their columns and datatype. Need to generate an accurate SQL query for the question.
Only use the columns present in the respective table. Only use the columns which are required to generate the SQL query. Only use table joins if required and not otherwise.

### Tables ###
TABLE: CREATE TABLE table_name_27 (home_team VARCHAR, date VARCHAR, tie_no VARCHAR, away_team VARCHAR)

### Question ###
With Sheffield United as the away team and the date, what home team has a tie no of 15?

### Accurate SQL ###

SELECT home_team FROM table_name_27 WHERE tie_no = "15" AND away_team = "sheffield united" AND date = "sheffield united"