Case T-786/17: Judgment of the General Court of 19 September 2019 — BTC v Commission (Arbitration clause — Grant agreement entered into in the context of the eTEN framework programme, relating to trans-European telecommunications networks — ‘SafeChemo’ project — Investigation report from OLAF finding certain expenses incurred to be ineligible — Repayment in part of the sums paid — Counterclaim)