Andy Murray could make his return from hip surgery at one of two new indoor events in Britain later this spring.
Murray said after his operation that he hoped to return "around the grass court season, or maybe slightly before".
The Scot, 30, is unlikely to want to return on physically demanding clay, which precedes the grass court season, and his options elsewhere are limited.
But the Lawn Tennis Association (LTA) has announced two new indoor hard court events in Glasgow and Loughborough.
Both will be staged on the ATP Challenger Tour, the level below the ATP World Tour, with a prize fund of $100,000 (£72,000)
The first will take place at the Scotstoun Tennis Centre in Glasgow between 28 April and 6 May.