Given the circumstances of that game, Mheuka probably knew it wasn't going to be the start of a flurry of first-team appearances, but as he continued to develop in the U21s, a Premier League debut did eventually arrive.
After being included in the squad but left on the bench for the defeat at Aston Villa in late February, the striker was given a brief cameo at Stamford Bridge a few days later in the dying embers of the 4-0 win over Southampton.
"To make my Premier League debut there... It's hard to put into words," he told Chelsea's website. "The atmosphere, the energy, the passion of the supporters - it all hits you at once. The noise of the fans, the banging of the gates, the chants, it gives you goosebumps. You grow up dreaming of it, and when it finally happens, it’s better than you ever imagined.
"I didn't expect much reaction from the fans because I’m still young, but they were unbelievable. Each one cheered me on. You try to stay focused and in the zone, but moments like that are special. It was everything I’ve worked for. To experience it in a Chelsea shirt at the Bridge, I'll carry that with me forever."
While no more Premier League minutes were forthcoming thereafter as the Blues battled to reach the top five, Mheuka was afforded more game time in the Conference League - remarkably starting the last-16 first leg in Copenhagen, becoming the youngest Chelsea player ever to do so in Europe at the time, and coming on as a half-time substitute in the semi-final second leg at home to Djurgardens.
At international level, the teenager has represented England from U15 to U19 level. He was unable to help the Young Lions avoid a group-stage exit at this summer's U19 European Championship in Romania despite picking up two assists.