NBA News Roundup, Wednesday, September 18th: Boston Celtics complete surprise signing, Nick Young among veterans to join Houston Rockets training camp and more 

Iman Shumpert turns Rockets down; Houston will work out a number of notable veterans

Iman Shumpert won't be returning to Houston

Iman Shumpert played 19 times for the Houston Rockets over the final weeks of the 2018-19 regular season, but the 29-year-old has turned down the chance to return to Houston according to Shams Charania of The Athletic.

After months of discussions, free agent Iman Shumpert has decided to decline the Rockets' contract offer, sources tell @TheAthleticNBA @Stadium. Shumpert will not attend team minicamp this week in Las Vegas.

— Shams Charania (@ShamsCharania) September 17, 2019

Shumpert's snub leaves the Rockets with just nine players signed to guaranteed salaries, although Kelly Iko and Alykhan Bijani are reporting that the Rockets have added an extensive list of veteran free agents to their upcoming training camp.

Source: Thabo Sefolosha will also be at #Rockets minicampTo recap tweets from me and @KellyIkoNBA, here is a list of some of the players in Vegas for the #Rockets' minicamp: Terrence JonesNick YoungLuc Mbah A MouteCorey BrewerRaymond FeltonThabo Sefolosha

— Alykhan Bijani (@Rockets_Insider) September 17, 2019

Among the most notable names are Raymond Felton and Nick Young. Felton has spent the past two years in Oklahoma City putting up steady numbers and a move to Houston would reunite him with Russell Westbrook. Meanwhile, Young played just four times last season but is just a year removed from helping the Golden State Warriors to the NBA championship.