Celtic have made an assertive start to their defence of the Scottish Premiership title but Martin O'Neill still expects to see several more new faces through the door at Celtic Park before the transfer window concludes.
The Bhoys secured a fifth successive Scottish Premiership crown by the skin of their teeth as they defeated Hearts on the final day of the season, and the club's hierarchy are determined to ensure they don't stagnate whilst rivals around them invest heavily into their playing squad.
Celtic have bid farewell to stalwart Daizen Maeda following his switch to Ipswich Town, while the likes of Kelechi Iheanacho and Luis Palma have departed Glasgow this summer.
The need for reinforcements at Celtic was evident and the club have started to take the handbrake off their spending, with the club splashing in excess of £20million on three players alone.
Colombian forward Camilo Durán was the first signing through the door in a deal worth around £6m from Azerbaijaini outfit Qarabağ.
The 24-year-old had emerged as a priority target for Celtic after scoring 15 goals last season, including five in the UEFA Champions League.
O'Neill's eagerness to see his forward options strengthened resulted in Celtic breaking the bank to acquire Kasper Høgh from Bodo/Glimt in a club record deal.
Høgh scored 54 goals in 103 games for Kjetil Knutsen's Norwegian outfit, which included a brace against Manchester City in the UEFA Champions League back in January.
The Danish striker has already made his mark in the green and white hoops with a hat-trick in the 5-1 dismantling of Kilmarnock.
Celtic's attacking options were further replenished with the arrival of winger Haissem Hassan from Real Oviedo in a deal worth up to £9m.
The Egypt international has joined the Scottish champions on a four-year deal and arrives in time for UEFA Champions League registration, with Celtic set to face LASK Linz in the play-off round.
Every signing Celtic have made in the 2026/27 summer transfer window
- Kasper Høgh - Bodø/Glimt (€12.85m)
- Camilo Durán - Qarabağ (€5.5m)
- Haissem Hassan - Real Oviedo (€10.5m)
*Fees according to transfermarkt.co.uk
