Eliaquim Mangala was one of the players sent out on loan by Manchester City, one of five deals of that nature done by the Sky Blues on Transfer Deadline Day last week. Mangala will play for Valencia this season, but he could stay in Spain on a permanent basis.
That is because Valencia and City have agreed upon a buy option on the player's contract, according to reports in Spain. If the French defender doesn't play well enough for that option to be activated, he will return to England next summer as scheduled. But if Mangala does play well, Valencia could sign him permanently for around £15 million, always according to the report.
A potential permanent buy from Valencia next year would mean a giant loss in terms of transfer fees, since City bought Mangala from Porto two years ago for an astonishing £40 million, a deal that looks worse by the minute.