Martin O'Neill promises more Celtic signings amid fan frustration as Callum McGregor opens up on his future

Martin O'Neill insists there is "no question" that Celtic will make more signings this summer, but he wants "quality rather than quantity".

The Scottish Premiership champions have brought in Camilo Duran and Kasper Hogh so far, with Alex Oxlade-Chamberlain returning on a new one-year deal.

Supporters have been frustrated by the club's lack of transfer activity, while influential striker Daizen Maeda has left to join newly-promoted Premier League side Ipswich Town.