The 24 - year - old winger has penned a pre-contract to join the Parkhead club in the summer .
After the two clubs agreed a fee late last night winger signed a four - and - a-half year deal .
The 24 - year - old winger has penned a pre-contract to join the Parkhead club in the summer but after the two clubs agreed a fee late last night he signed a four - and - a-half year deal .