In addition to the context of the match, there are also some intriguing individual performances to monitor with Anthony Martial likely to be given an opportunity to shine after scoring on his debut in the last round of Premier League games.
Koeman believes it is only right that the window should close before the start of the season, so that such issues do not arise while competitive games are being played.
Manchester United could be forced to look elsewhere for an attacker after target Sadio Mane picked up an injury for Southampton, according to reports from the Daily Mail.
Saints signed the midfielder last month as boss Ronald Koeman restructures his squad following the departure of Morgan Schneiderlin to United, and the former Feyenoord man is seen as a natural replacement for the France worldwide.