Striker Saido Berahino will return to play for West Brom again, players' union boss Gordon Taylor has said.
Berahino hinted he would not represent the club under chairman Jeremy Peace after a move to Tottenham was blocked.
The England Under-21 international, 22, was given extra time off and is due to meet Baggies officials on Monday.
"We made contact with the club and player and are very hopeful the matter will be resolved," Taylor told BBC Radio 5 live's Sportsweek.
Berahino was the subject of four bids from Spurs over the summer and has been left out of the team for the last three matches.
Taylor, PFA chief executive since 1981, also called for the transfer window to be closed before the start of the new season, using the example of the uncertainty surrounding Everton's John Stones.
"To have the window open once the season starts has created some very frenzied activity and left a lot of good players who should have been on the pitch not playing," said Taylor, 70.
"John Stones had to cope with a lot as Everton - as was their right - wanted to keep him.
"We have fought long and hard to have players literally free. But that comes at the end of their contract and before that happens it needs two clubs to agree."