Peter Bosz has admitted that the international break has brought moments of concern for PSV, with the head coach watching players around the world pick up injuries while much of his squad has been away on international duty.

PSV were left with just three fit first-team players at one stage during the two-week break, forcing Bosz to temporarily call up 11 players from Jong PSV and the academy.

In an interview with Rik Elfrink of Eindhovens Dagblad, Bosz asserted, “I had three fit players left over the past few weeks. That is, of course, an exceptionally low number.”

Despite the depleted group, Bosz said the club managed to maintain its training schedule and give players valuable match time.

“Even so, we managed to hold good training sessions, and everyone got a solid friendly match under their belts.”

With so many PSV players representing their countries, Bosz has spent much of the break following international football and looking for appearances from his own squad members.

“Almost every evening, I watch the broadcast that switches between the various international matches, and I try to find footage of our players whenever possible.”

One moment that particularly caught his attention was seeing Mauro Júnior involved with Brazil alongside some of the country's biggest names.

Bosz has also been watching the Netherlands, although he admitted he has not followed the wider picture closely enough to offer detailed analysis.

The PSV coach also acknowledged that the international break had made it difficult to properly assess the team's recent defeat by FC Twente.

“There wasn't much point in reviewing that match with just three guys, because only Nick [Olij], Sven [Mijnans], and Ryan [Flamingo] would have heard it.”

Bosz intends to address the performance once the full group returns.

“There are plenty of lessons to be learned from that game, so we’ll analyze it once everyone is back.”

The biggest concern for Bosz, however, has been the number of injuries occurring during international matches.

“When you watch the roundup show, you see one player after another go down. Sometimes you really fear the worst, yes.”

The PSV coach questioned whether the demands being placed on modern players are reaching their limits.

“The increased intensity of football, and the constant demand for more, more, and more matches? Well... there has to be a limit somewhere.”

Bosz admitted he was particularly concerned about Ruben van Bommel, given the winger's previous cruciate ligament injury and lengthy period on the sidelines.

“To be honest, I was quite worried about Ruben van Bommel.”

He pointed to Sergiño Dest's experience at PSV as an example of how returning from a long-term injury can bring further physical problems.

“Players often pick up a new injury after a cruciate ligament problem because they haven't played for a year. Sergiño experienced that with us last year, too. He’d never had a muscle injury, and then suddenly, he did.”

With PSV's first-team squad set to reunite, Bosz can now turn his attention back to club football, while hoping his players return from international duty ready to resume the campaign.