For the second time this season, the Jambos have failed to pay a number of players and staff, including manager John McGlynn, on time, with the SPL placing a transfer embargo on the club earlier this week.
The latest money wrangle follows a tumultuous season off the park last year as players were left waiting for their salaries on several occasions.
On the field, it has been a mixed start for McGlynn as he has seen his side pick up just nine points from nine games but McCall reckons there is plenty more to come from the Jambos after their latest wage scare.
He said: "I think, if anything, it gels them together at times. You saw that last season when they went and won the Scottish Cup. This year, the last time there were money issues they went to Dundee United and won 3-0. Although it is not nice, the players will realise they will get paid.
"It is not ideal and it is not nice but the players will have become used to it and they will just get on with it. I genuinely believe that there is nothing in the league. If they win a couple of games they will be top three, top four. It is so tight.
"They have still got a strong squad, although they have lost players. Look at someone like John Sutton, he was top scorer when he was with us but he is on the bench. They have good strength in depth."
Sunday's Gorgie trip will allow Well to finally return to action after a mini-break in their season after their last scheduled outing, at home to Dundee United, was postponed.
They have not played since going down 2-0 to Celtic on September 29 and McCall is keen to continue his impressive recent record in the capital.
He said: "It was disappointing to get the Dundee United game called off so we are looking forward to getting back playing and going to Tynecastle. It is a place where we have a good record. We have won two, drawn two and lost one in the last five.
"It is always a good place to go and play and I have no doubt it will be a tough game. I was at Tannadice when they won 3-0 and although Celtic deserved to beat them, I thought they gave a good account of themselves.
"In the Christmas game last year, they played really well and beat us but we have had the 3-3 game and it is a place that holds good recent memories, especially the 1-0 win there towards the end of last season.
"Everyone always looks forward to playing at Tynecastle."