Hopes have been raised that next week’s strikes by London Underground drivers could yet be averted, after sources said the RMT union had put out feelers for talks. The RMT members, almost half of London’s Tube drivers, are due to strike for two 24-hour periods from midday on Tuesday and Thursday, closing some lines entirely and bringing widespread travel disruption to the capital until the weekend. The action follows a similar wave of strikes in April , with more planned for June in the dispute over a planned four-day week working pattern. No talks have yet taken place and with neither Transport for London (TfL) nor the union apparently willing to alter course, further strikes had appeared inevitable. TfL has warned passengers that many services will not operate next week. However, a source close to the dispute said that union representatives had now put out feelers to seek a deal, giving TfL a “window of opportunity” to prevent further strikes.…