Celtic clinch Christie deal but Van Dijk joins Saints
Ryan Christie has joined Celtic from Inverness Caledonian Thistle on a four-year contract, the Parkhead club have confirmed.
The 20-year-old midfielder will return to Inverness on loan, with the Scottish champions having the option of him returning in January 2016, an option which the Hoops are likely to exercise.
The Scotland Under-21 international has made almost 70 first-team appearances for Inverness.
Celtic manager Ronny Deila said: "Ryan is a hugely talented young player and it is great news that we have secured his long-term future with Celtic. He is someone who has so much in his game and he is a young player who will excite our fans."
News of Christie's arrival came after it was confirmed that Virgil van Dijk had signed for Southampton. The 24-year-old defender joined the Saints on a five-year deal for around £11million.
Former Rangers chief executive Charles Green has been arrested as part of an investigation into the "alleged fraudulent acquisition" of the club in 2012.
The 62-year-old arrived at Livingston police station in West Lothian earlier in the day.