The Rangers teenager only returned to Ibrox from a loan spell last month.

Rangers midfielder Mati Zata has announced on Twitter that he is leaving Ibrox.
It is unclear whether or not Zata has left Rangers for another club – although none have claimed to have signed him as yet.
Providing the 17-year-old’s departure came ahead of Wednesday’s transfer deadline, however – as is suggested by the timing of his post – he would still be able to join another team outside of the window.
He wrote: “A very sad Day leaving the club that I’ve loved & supported all my life but nothing’s meant to last forever.
“Would like to thank all the players, coaches & parents that have helped me along the way and made it such a memorable experience, wishing all the boys the best of luck”.
Zata only recently returned to Rangers following a spell on loan at East Kilbride.
The Alloa-born player had spent the best part of five years on the books at Ibrox, but appears to have been some distance away from making a first team breakthrough.
Earlier on Wednesday, Rangers completed the signing of another young Scottish midfielder, Glenn Middleton, on a two-and-a-half year deal from Norwich City.

The 18-year-old reunites with Graeme Murty, the Rangers manager, at Ibrox – 18 months after the Yorkshireman left Carrow Road’s academy set up for Glasgow.
Here’s how Gers fans are reacting to Zata’s exit:
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