Soccer is a cut-throat business which Philadelphia Union coach Peter Nowak clearly understands.

The Polish tactician was forced to make a tough decision recently when he released defender Dave Myrie after just one match but he said it was necessary if the fledgling club wants to move forward.

"We believe we gave Dave enough time to establish himself," Nowak said. "We didn't cut him because he played bad. Right now, we have another option we can go forward with and this will still give him time before the signing window closes to sign with another club.

"The team knew from day one that we are in a serious business. They saw it and felt it in the preseason during running, fitness and our time in the weight room.

"From a team perspective, I need to know the players are committed and ready week in and week out to play to the best of their ability. If something doesn't work, we'll make an adjustment and try to make our team better."

Nowak admitted that his team needs experience as everything comes together so releasing Myrie and bringing in Cristian Arrieta was something he thought would benefit that part of the squad.

"With us going forward, we need a little bit more experience," Nowak said. "That's why we brought Cristian Arrieta into the picture.

"That's the business we're in," the Union manager continued. "You see it in big leagues around the world. Some players don't fit in the whole environment. … (Myrie) was disappointed but when you look at the whole picture, he knew something would be coming."