'GOOD TO SEE YOU CHOTTE BHAI. WAITING FOR YOUR COMEBACK,' tweeted Harbhajan.
Sreesanth also spoke about how Sanju should approach the IPL as a captain.
Former Indian opener and three-time IPL champion Murali Vijay makes a foray into sports broadcasting.
The tournament will be held in February and March in Qatari capital Doha.
Harbhajan joined Sreesanth in a video chat with cricket presenter Vikram Sathaye on Glance LIVE Fest, and revealed how "embarrassed" he felt about the incident.
He was the first fast bowler who symbolised the new Indian spirit where one is not afraid to stand up and give back in full measure without feeling either intimidated or apologetic.
The maestro took to Instagram to wish the Kerala pacer on his retirement.
The pacer will always be remembered as someone who put Kerala cricket on the map.
"I can bowl as quickly as any 19-year-old bowler. However, I do not want to eat up the place of a deserving youngster," said the pacer who announced his retirement on Wednesday.
The two were involved in the Slapgate incident in the first-ever IPL in 2008.