By Scott Trotter Peterborough United boss Darren Ferguson has lavished Manchester City loanee Jadel Katongo with praise after he was involved in Posh’s first three goals in a 5-1 win over Northampton Town. Katonga joined the League One side on loan in August to embark on his first move away from the Etihad Stadium. The defender had already trained with Pep Guardiola’s first team before completing the season-long loan. Ahead of the move, Ferguson cited the youngster’s versatility and indicated his ability to play at right-back as a plus point. It is in that position that Katongo has been able t…