Who will Kell Brook fight next?

He will be operated on during the coming week after his right eye socket was broken, but has already spoken of his intention to return at light-middleweight.

Here, Press Association Sport looks at five potential opponents, and the division in which they may collide.

1. Amir Khan (light-middleweight)

The fight Brook has long wanted, and which would be the biggest either can expect in the UK. Khan has long dismissed his rival as not having enough of a reputation, which will be more difficult to argue after he impressed so many against Golovkin. As well as the bad feeling between the two, the weight could prove a problem. Khan last fought at 155lbs, but is expected to return at welterweight. Brook's move to 160lbs means boiling back down to 147lbs is likely beyond him.

2. Saul Alvarez (light-middleweight)

Many consider a fight between Mexico's Alvarez and Golovkin as the biggest in the world. The 26-year-old appears in no rush to fight the man from Kazakhstan, however, and with Brook said to have impressed American television network HBO on Saturday night he may be considered a suitable opponent. Alvarez next fights Britain's Liam Smith on Saturday.

3. Liam Smith (light-middleweight)

Smith, 28, defends his WBO light-middleweight title against Alvarez on September 17. In the event of victory or defeat - the former is expected - a match-up against Brook would have widespread appeal. The weight would also suit each fighter, but how likely an agreement is between rival promoters Frank Warren and Eddie Hearn, who respectively work with Smith and Brook, is in doubt.

4. Miguel Cotto (light-middleweight)

Puerto Rico's once-great Cotto, 35, is in the final stages of his decorated career yet retains enough of his abilities to remain a worthwhile opponent for almost any in the division. His reputation would also ensure a potential fight against Brook would generate significant interest both in the US and UK. Brook's promoters Matchroom, however, are likely to pursue an easier - and cheaper - fight given he is expected to be out until at least next spring.

5. Cornelius Bundrage (light-middleweight)

America's former world champion Bundrage, 43, may prove the ideal opponent for Brook to return against. His promoters Matchroom are fond of pursuing fights with fighters who were once world-level but offer a reduced threat. Bundrage is established at light-middleweight and fought for a world title in his past fight, but no longer poses a huge threat. Brook would impress if he was to win convincingly, and rebuild the momentum that will be lost in the coming months.