CREATE TABLE table_14703 ("Name" TEXT, "Country" TEXT, "Loan Club" TEXT, "Started" TEXT, "Ended" TEXT, "Start Source" TEXT, "End Source" TEXT)

What is the End Source from the Hartlepool United Loan Club?
SELECT "End Source" FROM table_14703 WHERE "Loan Club" = 'hartlepool united'
SELECT "End Source" FROM "table_14703" WHERE "Loan Club" = 'hartlepool united'