Saints have completed the signing of Steven Caulker – and Ronald Koeman insists there will be more to come.

The Saints boss is juggling trying to add to his squad with preparing his team for tomorrow night's sold-out return to European football against Vitesse at St Mary’s.

Caulker arrives on a season long loan deal from QPR, and Koeman is keen to bolster his squad further to enable them to compete.

“I think still we need some players more to have really competition in our squad,” he said.

“We are working on it and sometimes you need a little bit more time.

“We are not in a hurry because we like to have the players what we like to have in the team and sometimes you need more time for that.”