Concussion substitutes in football could be trialled next season after the game's law-making body agreed to set up an expert group to look at the best way for football to manage head injuries.

Medical specialists and former players will be appointed to the group and, if the panel proposes solutions for assessing and managing concussion during a game to the International Football Association Board's annual general meeting in February, trials could take place in competitions around the world during the 2020-21 campaign.

Temporary substitutes have been suggested as one solution, allowing medical staff to conduct a 10-minute assessment on the player suspected of having a concussion and then deciding whether the temporary substitute should remain on the field or go back off.

IFAB general secretary Lukas Brud said: "We don't want to rush into a decision. We have a clear idea on the process, but the outcome is difficult to anticipate, but we definitely want solutions in place."

Arsene Wenger, FIFA's new chief of global football development, told Sky Sports News: "The health and safety of the players is the priority.

"We will try to do what is requested to protect the players, of course, and that decision will be made very soon."

A statement from IFAB said that the members of the group would be announced in due course. The group could then put proposals to the IFAB's annual general meeting in Belfast in February. Any proposals and recommendations can become laws of the game from June 1, 2020.

Professor Jon Patricios, a specialist in concussion in sport, said in October that the 10-minute evaluation period was the "optimal" way to treat suspected.

Prof Patricios, who had presented to the IFAB panels earlier that month, said: "The conclusion in my presentation was that in several consensus meetings throughout the world a 10-minute period is felt to be optimal for evaluating the player and that the evaluation should take place off the field.

"My view is that no system is perfect - a concussion could evolve over two days and you could miss it in a half-hour evaluation, but you have got to very carefully balance the priority of player welfare with disruption to the game and the fabric of the game, and the potential manipulation of those rules.

"So it's a balancing act, but we feel that having gone through an evaluation in reasonably experienced hands, 10 minutes is a fair amount of time to give a clinician to make a decision."

Premier League stadiums are equipped with pitchside monitors but no referees have used them this season

Meanwhile, Wenger has also spoken out on VAR and called on the Premier League to encourage referees to use pitchside monitors.

The former Arsenal boss believes the English top flight should change its policy on how the system is used.

At the moment, the advice from referees' group Professional Game Match Officials Limited (PGMOL) is that officials should use the monitors sparingly and instead rely on the guidance of the VAR.

That policy was reviewed at the league's shareholders' meeting in November amid reports it might be changed, but the advice was left as it was.

Wenger, speaking after the annual business meeting of the IFAB, clearly believes the referee should be seen to be having the final say, as they are in many other competitions, such as the men's and women's World Cups over the last two summers.

Asked whether there should be more consistency in the way it is used, the Frenchman told Sky Sports News: "That to me is the most important worry. At the moment I feel like the referee needs to have a monitor to check if he was right or wrong.

"You should give the referee the possibility to do it. Then after to explain the decision on the screen.

"At the moment you have two big clubs (Manchester United and Liverpool) with no screens. That is a problem that has to be resolved. I would like the decision to be explained on the screen."

Wenger felt the criticism of VAR in England was harsh.

"I think it is working much better than you think, honestly," he said. "I witnessed many situations before where you suffered from bad decisions, and let's not forget it's in the first year.

"Of course everything is not perfect and the adjustments will come, you have to educate as well the people in VAR to get the experience and to educate them - to intervene at the right moment.

"Let's not forget that it's video assistance for the referee. They are not the ones who should make the decision, but the ones who help the referee to make the right decision."

A statement released from the IFAB on Tuesday afternoon said members of its technical and football advisory panels were given a "detailed update" on VAR use worldwide and "the growing demand for more immediate information about the referee's final decisions after a VAR review".

The members will look at "different communication options" so that supporters in the stadium and television viewers can better understand decisions that are made.