Southampton manager Ronald Koeman believes Jordy Clasie made a big impact as a substitute in the 3-0 win over Groningen today, as quoted by Goal.
Koeman returned to his the club he started his career with earlier today, and walked away with a convincing victory thanks to goals from Jose Fonte, Sadio Mane and Graziano Pelle.
The game also saw new signing Clasie make his debut, coming on as a substitute for Steven Davis at half time having completed his move from Feyenoord earlier this week.
The deal saw the 24-year-old midfielder reunite with his former Feyenoord boss Koeman, and he is expected to play a big part in replacing Morgan Schneiderlin following the Frenchman's move to Manchester United.
It may have only been a cameo, but Koeman was quoted by Goal as saying Clasie improved the Saints upon his arrival onto the pitch - but did add that the diminutive midfielder must compensate for his athletic shortcomings when he plays in the Premier League.
"He plays a very important position in our team, especially putting pressure on," said Koeman. "You saw the difference between the first and second half, when Clasie came on."
"Physically it is difficult for Jordy in the Premier League. He will not win aerial duel, so he should be faster and act smarter. In the end his football skills are the most important thing and he has. Jordy will still need to grow, but I have every confidence in him," he added.
Bargain of the summer?
Southampton have earned praise for their calculated moves in the transfer market after losing key players, and whilst they were lauded for signing Portuguese international Cedric as a replacement for now-Liverpool right back Nathaniel Clyne, Clasie's arrival really does demonstrate Southampton's ability in the transfer market.
The Dutch international may not be as physically gifted as his predecessor Schneiderlin, but he has an excellent range of passing and should be able to dictate play alongside the more robust Victor Wanyama.
BBC Sport suggest that Clasie cost just £8m, around a third of what the Saints sold Schneiderlin for - and if he can live up to his billing, Southampton may have landed the bargain of the summer in Clasie.