Celtics swingman Jaylen Brown thought Boston wouldn’t budge from its original $80 million extension offer before the front office substantially sweetened the pot, he told ESPN’s Adrian Wojnarowski on the Woj Pod (hat tip to Nick Goss of NBC Sports Boston). Brown eventually signed a four-year, $115 million rookie-scale extension, which included $12 million in incentives. “To be honest, I came with the mindset I didn’t think that anything was going to get done,” Brown told Wojnarowski. “I wasn’t sure that anything was going to get done. The first offer was four years, $80 million. I didn’t think they were going to budge from that. So, I came with the mindset, I told (agent Jason) Glushon that, ‘Let’s see what can happen, you know?’ For me, I didn’t think Jason was going to be able to get anything done. I thought they were going to stay at ($80 million) and that was going to be it.”