Chelsea coach Jose Mourinho has opened the door for the return of loan star Hernan Crespo by insisting AC Milan would have to pay a hefty transfer fee to make the move permanent.

• 切尔西主教练穆里尼奥已经为租借球员克雷斯波打开回归之门，并且穆帅说如果米兰想引进他将需要支付一笔价格不菲的转会费。