Neither made the grade with ‘The Os’ but both have found their way into the Football League with Kyreece enjoying a fine season with League Two side Colchester United.
There are many connections between Posh and Leyton Orient, who clash at the Weston Homes Stadium in a League One fixture on Boxing Day.
Gaby Zakuani is a playing legend at both clubs, while midfielder Hector Kyprianou was a recent transfer between the clubs.
There are many others, including a couple who played for Posh who went on to manage Orient, and one who played for Orient before managing Posh.
See how many of these former players/managers you remember...
1. SHAUN BATT
A rapid striker who moved to Posh from non-league Fisher Athletic in August, 2008. He struggled to break into a top Posh team, making 61 appearances in two seasons, but only 19 starts. He scored four goals and a couple were spectacular before he moved on to Millwall. He had a loan spell at Leyton Orient while at Millwall before signing permanently for them in 2013. 'The Battman' made 65 appearances for Orient, but again most (44) were as a substitute. He scored 10 goals before leaving for Barnet in July, 2015. Photo: PT
2. JASON BRISSETT
A winger who joined Posh on a free transfer from Arsenal in June 1993, but his attitude often let him down. He scored 3 goals in 48 appearances including one in an FA Cup draw with Spurs before joining Bournemouth in December 1994. He did well with the Cherries making over 126 appearances. Brissett made 4 Orient appearances in the 2000-01 season. Photo: David Lowndes
3. DANNY CARTER
This winger was an Orient star for 8 seasons before moving to Posh for £25k in June 1995. He suffered with injuries at Posh and made 45 appearances in two years, scoring once. Carter had made over 200 League and Cup appearances for Orient, scoring 22 goals. Carter joined Welsh clubs Barry Town and then Merthyr after leaving Posh. Photo: David Lowndes
4. SIMON CLARK
This solid central defender was a late starter in professional football. Posh was his first Football League club when he joined in May 1994 aged 27. He made 132 appearances for Posh in 3 seasons, scoring 4 goals, before Orient signed him for a nominal fee in 1997. Clark played 96 times for 'The Os' before moving to Colchester on a free transfer. Photo: David Lowndes