Martin O'Neill has assured Celtic supporters that further transfer activity is coming this summer, even as some fans have grown impatient with the pace of recruitment at the Scottish Premiership champions.

The club have brought in Camilo Duran and Kasper Hogh, with Alex Oxlade-Chamberlain also returning on a new one-year deal. However, frustration has mounted following the departure of striker Daizen Maeda, who left to join newly-promoted Premier League side Ipswich Town.