Guthrie is expecting an offer from Reading this week, while Smith turned down the offer to stay at St James’ Park as a coach.
Danish striker Løvenkrands went on a separate lap of honour after the Manchester City match, and knew he had played his last match.
Løvenkrands has been released before by Newcastle, when his six-month contract ended with relegation in 2009, only to return as a free agent in the early stages of the next season.
Of the rest, Hungary defender Tamás Kádár is easily the most experienced, but he never played first-team football for Alan Pardew.
The left-sided centre-back, capped three times by his country, was one of a host of young players signed by Newcastle early in Mike Ashley’s tenure as owner when he joined from Zalaegerszegi in 2008.
Sammy Adjei, Phil Airey, Ryan Donaldson, Stephen Folan, Jeff Henderson, Greg McDermott and Patrick Nzunzi are the others released yesterday.
James Tavernier, Paul Dummett, Brad Inman, Connor Newton and Michael Richardson have been offered new deals.