Scotland include Watt, Umeed for three-day game
The team also included another left-arm spinner Con de Lange, who has played most of his first-class cricket in South Africa, but has become eligible for Scotland selection after completing a four-year residency.
Peter Mommsen will lead the side for the game that starts on May 25 and is their only fixture before the Intercontinental Cup match against Afghanistan that begins on June 2 in Stirling.
"It's fantastic to have the opportunity to play at the Ageas Bowl against our Associate rivals UAE as we build towards our first I-Cup fixture," Grant Bradburn, the Scotland coach, said. "We have important international fixtures in all three formats of the game over the coming months and we have witnessed healthy competition for places in our first Scotland selection following the World Cup. Our players will relish the chance to come together to fine tune our red balls skills at a test venue of such quality."
The month of July will get busier for Scotland as they host the 12-team ICC World T20 qualifier along with Ireland.
Scotland squad: Preston Mommsen (captain), Richie Berrington, George Munsey, Con de Lange, Matthew Cross, Alasdair Evans, Hamish Gardiner, Michael Leask, Gavin Main, Safyaan Sharif, Andrew Umeed, Mark Watt