He will likely have a good idea of his final selection too, but in certain instances it will come down to form, fitness and minutes on the pitch.
We look at the overseas-based contingent and how they have fared recently, and it is clear there are some areas of concern.
Shandre Campbell (Club Brugge, Belgium): Club Brugge are leaders in the Belgian title race by a point with two rounds to play, but Campbell has not featured for them in the league since early April. He has 16 appearances in all competitions this season, including three in the UEFA Champions League.
Puso Dithejane (Chicago Fire, USA): It has been a little bit of a baptism of fire for Dithejane in Chicago with an early red card. He has been mostly used off the bench so far but did earn a first start in a 5-0 win over Sporting Kansas City. He has five appearances so far.
Lyle Foster (Burnley, England): Foster was not in the squad at all for Burnley at the weekend as they lost at Leeds United under new caretaker coach Michael Jackson. That will be a worry for Bafana coach Broos in the coming weeks with the World Cup looming.
Bongokuhle Hlongwane (Minnesota FC, USA): Hlongwane likely blew his Bafana chances with a poor display against Panama in March on his return to the national team after almost three years. He has had four starts and four substitute appearances in MLS so far this season, with no goals.
Samukele Kabini (Molde, Norway): Kabini played in the 1-0 win over Bodo/Glimt on Monday and has featured in five of his side’s seven games so far this campaign. He already has two red cards, though, which are the first of his career.
Luke le Roux (Portsmouth, England): Le Roux started Saturday’s 1-1 draw with Birmingham City, which was the final game of the season for Portsmouth. He has nine starts and seven substitute appearances this season in all competitions and will be in the frame for the World Cup playing at such a high level, but has not been used much by Broos in recent years.
Thembinkosi Lorch (Al Ittihad, Libya): Broos has admitted recently that Lorch has been playing well at his new Libyan club, but made the point that he plays in the same position as Themba Zwane and Relebohile Mofokeng, and suggested both of those would go to the World Cup, if fit.
Siviwe Magididi (Beerschot, Belgium): Magididi did not feature in Beerschot’s 3-1 playoff defeat to Lommel at the weekend, where they will need to turn things around in the second leg to keep their promotion hopes alive. He has seven appearances, including three starts, since his January move from Siwelele.
Cassius Mailula (Kortrijk, Belgium): After arriving on loan from Toronto, Mailula did not feature much in the Belgian second division, with three appearances and no goals. Kortrijk earned automatic promotion and Mailula now returns to Canada with an uncertain future.
Olwethu Makhanya (Philadelphia Union, USA): Makhanya played in the 0-0 draw for Philadelphia Union against table-topping Nashville, which was a good result but part of a poor start to the season that sees his side bottom of the division. He has started 10 of their 11 games this campaign after a red card against New York City in March, and it will be intriguing to see whether he makes the move to Europe in the next transfer window.
Mihlali Mayambela (Omonia Nicosia, Cyprus): Mayambela has been used sparingly by Omonia Nicosia since his January move from Aris Limassol, but the club have been crowned Cypriot champions. He has two substitute appearances and was unused on the bench this past weekend.
Mbekezeli Mbokazi (Chicago Fire, USA): Mbokazi made an error when he gave away possession in a 3-2 loss to Cincinnati at the weekend, but has the backing of his coach Gregg Berhalter and remains a player who has roundly earned praise so far this season. He is growing a cult following in Chicago.
Elias Mokwana (Al Hazem, Saudi Arabia): Mokwana featured in the 3-0 loss to Al Hilal this weekend and has 14 starts to go with seven substitute appearances in the Saudi Pro League this season. He has scored just one goal. Mokwana has been in and out of the Bafana set-up of late.
Siyabonga Ngezana (Steaua Bucharest, Romania): Ngezana remains sidelined through injury and there is growing doubt about his fitness for the World Cup. It will be a shame for the player, who is a likely starter at that tournament as the taller partner alongside Mbokazi at centre-back.
Mohau Nkota (Al Ettifaq, Saudi Arabia): Nkota started the 0-0 draw with Al Najma on Monday, having recently returned to the first XI after a period on the sidelines. He has 16 starts and five substitute appearances this campaign, with two goals. He was not selected for March’s internationals against Panama.
Ime Okon (Hannover 96, Germany): Okon started for Hannover 96 in their 3-3 draw with Preußen Münster this past weekend as they continue to push for promotion to the Bundesliga. He has featured in 23 of their 32 Bundesliga II games, including 19 starts, and has two goals. He has been playing as part of a back three.
Sphephelo Sithole (Tondela, Portugal): Tondela remain in the relegation zone in Portugal, but a win over Casa Pia at the weekend means they are a point off the relative safety of the playoffs. Sithole came off the bench late on to see out the win. He has 16 starts and 10 substitute appearances this season and looks likely to be on the flight to Mexico.
Tylon Smith (Queens Park Rangers, England): Smith came on at halftime for QPR in their 3-0 loss at promoted Ipswich Town on Saturday, his third substitute appearance in the English Championship after 14 appearances on the bench. It is likely not enough to get him to the World Cup.
Percy Tau (Nam Dinh, Vietnam): Tau has not played for his Vietnamese club since March 13, ending any faint hopes he might have had of a Bafana return for the World Cup. He scored a single goal in nine appearances, but the 31-year-old has not been seen in almost two months.