Preston manager Phil Brown has hailed the impact of Graham Alexander following his return to Deepdale.
The 39-year-old, a summer signing after leaving Burnley, is one of four nominations for August's League One player of the month after making five league appearances.
Brown told BBC Radio Lancashire: "To say Graham's contribution is priceless would be an understatement.
"It's just phenomenal what he has brought to the table."
Alexander has been an ever-present in the North End midfield this season.
Brown said: "I didn't for one minute think he would play 90 minutes against Colchester (on the opening day) having not played a game in pre-season.
"He then knocked at my door on the Sunday morning saying he wanted to play against Crewe (in the Carling Cup).
"He doesn't look like he's tiring during games. He looks like he is taking it all in. He just loves playing for Preston North End as you can see."
Brown also feels that Alexander has made a positive impact on the club's young professionals.
"I've been impressed with him not just on the field but inside the changing room," he said.
"He goes around the young kids and if you look at that squad we've got probably 15 or 16 under-21s.
"With that in mind you need an old head around the young lads to make sure they conduct themselves on and off the pitch in the right manner."